subject:(Design Optimization)

Texas A&M University

1. Hur, Doe Young. Design Optimization of Folding Solar Powered Autonomous Underwater Vehicles Using Origami Structure.

Degree: MS, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/165844

► Origami, as an application for morphing structure engineering, which has been studied for a long time, has recently made remarkable progress in terms of technology.… (more)

Subjects/Keywords: Design Optimization; Origami

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APA (6^th Edition):

Hur, D. Y. (2017). Design Optimization of Folding Solar Powered Autonomous Underwater Vehicles Using Origami Structure. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/165844

Chicago Manual of Style (16^th Edition):

Hur, Doe Young. “Design Optimization of Folding Solar Powered Autonomous Underwater Vehicles Using Origami Structure.” 2017. Masters Thesis, Texas A&M University. Accessed March 08, 2021. http://hdl.handle.net/1969.1/165844.

MLA Handbook (7^th Edition):

Hur, Doe Young. “Design Optimization of Folding Solar Powered Autonomous Underwater Vehicles Using Origami Structure.” 2017. Web. 08 Mar 2021.

Vancouver:

Hur DY. Design Optimization of Folding Solar Powered Autonomous Underwater Vehicles Using Origami Structure. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1969.1/165844.

Council of Science Editors:

Hur DY. Design Optimization of Folding Solar Powered Autonomous Underwater Vehicles Using Origami Structure. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/165844

University of Maryland

2. Middha, Parteek. Seismic Design Optimization of Steel Structures Using Particle Swarm Algorithm.

Degree: Civil Engineering, 2017, University of Maryland

URL: http://hdl.handle.net/1903/20454

► Earthquakes are one of the most devastating and expensive natural disasters in the world. Economical and earthquake-resistant design remains a challenge for structural engineers. This… (more)

Subjects/Keywords: Civil engineering; Metaheuristic Optimization; OpenSees-MATLAB; Particle Swarm Optimization; Performance-Based Design Optimization; Seismic Design Optimization; Structural Design Optimization

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APA (6^th Edition):

Middha, P. (2017). Seismic Design Optimization of Steel Structures Using Particle Swarm Algorithm. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/20454

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Middha, Parteek. “Seismic Design Optimization of Steel Structures Using Particle Swarm Algorithm.” 2017. Thesis, University of Maryland. Accessed March 08, 2021. http://hdl.handle.net/1903/20454.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Middha, Parteek. “Seismic Design Optimization of Steel Structures Using Particle Swarm Algorithm.” 2017. Web. 08 Mar 2021.

Vancouver:

Middha P. Seismic Design Optimization of Steel Structures Using Particle Swarm Algorithm. [Internet] [Thesis]. University of Maryland; 2017. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1903/20454.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Middha P. Seismic Design Optimization of Steel Structures Using Particle Swarm Algorithm. [Thesis]. University of Maryland; 2017. Available from: http://hdl.handle.net/1903/20454

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

3. Liu, Qiang. EBF3GLWingOpt: A Framework for Multidisciplinary Design Optimization of Wings Using SpaRibs.

Degree: PhD, Engineering Mechanics, 2014, Virginia Tech

URL: http://hdl.handle.net/10919/49665

► A global/local framework for multidisciplinary optimization of generalized aircraft wing structure has been developed. The concept of curvilinear stiffening members (spars, ribs and stiffeners) has… (more)

Subjects/Keywords: Structural Optimization; Global-local Optimization; Wing Optimization; Multidisciplinary Design Optimization; SpaRibs; Stiffened Panel Optimization

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APA (6^th Edition):

Liu, Q. (2014). EBF3GLWingOpt: A Framework for Multidisciplinary Design Optimization of Wings Using SpaRibs. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/49665

Chicago Manual of Style (16^th Edition):

Liu, Qiang. “EBF3GLWingOpt: A Framework for Multidisciplinary Design Optimization of Wings Using SpaRibs.” 2014. Doctoral Dissertation, Virginia Tech. Accessed March 08, 2021. http://hdl.handle.net/10919/49665.

MLA Handbook (7^th Edition):

Liu, Qiang. “EBF3GLWingOpt: A Framework for Multidisciplinary Design Optimization of Wings Using SpaRibs.” 2014. Web. 08 Mar 2021.

Vancouver:

Liu Q. EBF3GLWingOpt: A Framework for Multidisciplinary Design Optimization of Wings Using SpaRibs. [Internet] [Doctoral dissertation]. Virginia Tech; 2014. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10919/49665.

Council of Science Editors:

Liu Q. EBF3GLWingOpt: A Framework for Multidisciplinary Design Optimization of Wings Using SpaRibs. [Doctoral Dissertation]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/49665

4. [No author]. Multidisciplinary Analysis of Closed, Nonplanar Wing Configurations for Transport Aircraft.

Degree: PhD, Mechanical Engineering/G??nie m??canique, 2016, Royal Military College of Canada

URL: http://hdl.handle.net/11264/981

►

A multidisciplinary study of an unconventional aircraft configuration was undertaken to determine if such a design could decrease the environmental impact of civil air transportation… (more)

▼

A multidisciplinary study of an unconventional aircraft configuration was undertaken to determine if such a design could decrease the environmental impact of civil air transportation through fuel burn improvements for given missions. The specific configuration examined was a box-wing. This is a nonplanar wing design where two parallel wings with some degree of streamwise separation were connected at their tips by a vertical wing segment. The box-wing design differs from a conventional aircraft in three key areas: it has the lowest induced drag of any wing design with the same projected area; it can achieve longitudinal stability without a horizontal tail; and the wings form a statically indeterminate truss structure. These three characteristics lead to improved performance in the respective disciplines of aerodynamics, stability and structures. For this reason, the box-wing has been investigated as a possible transport aircraft in several previous studies, each focusing on these disciplines independently. Trends which improved the performance in one discipline, however, could decrease the performance of the others. A multidisciplinary analysis was required to resolve these interactions and understand the trends which led to reduced fuel consumption for a box-wing design. Novel models for predicting the aerodynamic performance, static longitudinal stability and structural weight of a box-wing aircraft were developed for such an analysis. Optimal box-wing designs were identified, which were compatible with existing transport aircraft certification requirements and operational guidelines. These designs were compared against optimized conventional aircraft to determine what advantage the box-wing configuration possessed. These findings showed both the interactions between the three key disciplines of aerodynamics, stability and structures, as well as the effect which certification and operational constraints had on the design. Unconventional designs are critical to achieve the fuel burn reductions sought in the next generation of aircraft. The rigorous comparison made between box-wing and conventional configurations showed whether such a designs should be pursued in the development of future transport aircraft. Understanding how the constraints and design choices affect a box-wing's performance helped identify alternate missions which best take advantage of this unconventional design.

Une ??tude multidisciplinaire d???une configuration d???aile d???a??ronef non- conventionnelle fut entreprise afin de d??terminer s???il ??tait possible de r??duire la consommation de carburant requise pour entreprendre certains profils de vols. La configuration d???ailes s??lectionn??e pour ce projet ??tait celle d???ailes en anneau, une configuration similaire ?? celle d???un avion biplan o?? les extr??mit??s d???ailes horizontales sont rejointes par des segments d???ailes verticaux. Ce type de configuration se d??marque des ailes conventionnelles par les trois principes suivants: la tra??n??e par unit?? de surface induite est…

Advisors/Committee Members: Royal Military College of Canada / Coll??ge militaire royal du Canada, Perez, Ruben E..

Subjects/Keywords: Aircraft design; Optimization; Nonplanar wings

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APA (6^th Edition):

author], [. (2016). Multidisciplinary Analysis of Closed, Nonplanar Wing Configurations for Transport Aircraft. (Doctoral Dissertation). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/981

Chicago Manual of Style (16^th Edition):

author], [No. “Multidisciplinary Analysis of Closed, Nonplanar Wing Configurations for Transport Aircraft.” 2016. Doctoral Dissertation, Royal Military College of Canada. Accessed March 08, 2021. http://hdl.handle.net/11264/981.

MLA Handbook (7^th Edition):

author], [No. “Multidisciplinary Analysis of Closed, Nonplanar Wing Configurations for Transport Aircraft.” 2016. Web. 08 Mar 2021.

Vancouver:

author] [. Multidisciplinary Analysis of Closed, Nonplanar Wing Configurations for Transport Aircraft. [Internet] [Doctoral dissertation]. Royal Military College of Canada; 2016. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/11264/981.

Council of Science Editors:

author] [. Multidisciplinary Analysis of Closed, Nonplanar Wing Configurations for Transport Aircraft. [Doctoral Dissertation]. Royal Military College of Canada; 2016. Available from: http://hdl.handle.net/11264/981

University of Alberta

5. Liu, Chang. Optimization of Temporary Haul Road Design and Earthmoving Job Planning based on Site Rough-grading Design.

Degree: MS, Department of Civil and Environmental Engineering, 2014, University of Alberta

URL: https://era.library.ualberta.ca/files/1j92g838b

► Site rough-grading operations are the preliminary work of the construction projects in remote areas especially in Northern Alberta. Haulage cost typically accounts for around 30%… (more)

Subjects/Keywords: Haul Road Design; Earthmoving; Optimization

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APA (6^th Edition):

Liu, C. (2014). Optimization of Temporary Haul Road Design and Earthmoving Job Planning based on Site Rough-grading Design. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/1j92g838b

Chicago Manual of Style (16^th Edition):

Liu, Chang. “Optimization of Temporary Haul Road Design and Earthmoving Job Planning based on Site Rough-grading Design.” 2014. Masters Thesis, University of Alberta. Accessed March 08, 2021. https://era.library.ualberta.ca/files/1j92g838b.

MLA Handbook (7^th Edition):

Liu, Chang. “Optimization of Temporary Haul Road Design and Earthmoving Job Planning based on Site Rough-grading Design.” 2014. Web. 08 Mar 2021.

Vancouver:

Liu C. Optimization of Temporary Haul Road Design and Earthmoving Job Planning based on Site Rough-grading Design. [Internet] [Masters thesis]. University of Alberta; 2014. [cited 2021 Mar 08]. Available from: https://era.library.ualberta.ca/files/1j92g838b.

Council of Science Editors:

Liu C. Optimization of Temporary Haul Road Design and Earthmoving Job Planning based on Site Rough-grading Design. [Masters Thesis]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/1j92g838b

Queens University

6. Bakker, Jeremy. Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution .

Degree: Mechanical and Materials Engineering, 2013, Queens University

URL: http://hdl.handle.net/1974/8443

► Green technologies have recently gained interest for many reasons. Economic factors in conjunction with an increased social desire to reduce our environmental impact on the… (more)

▼ Green technologies have recently gained interest for many reasons. Economic factors in conjunction with an increased social desire to reduce our environmental impact on the Earth have created a desire for more environmentally friendly technologies, especially automotive technologies such as the electric car. While public interest in electric vehicles is growing, there are a number of challenges which must first be addressed before their widespread adoption is possible. Cost, longevity, and range are all important factors which need to be addressed for electric vehicles to compete directly with their gasoline counterparts. By more efficiently using the energy stored within the battery pack, some of these issues can be addressed. This study focuses on the thermal management systems for electric vehicles and the application of design optimization in the early design phase considering the pack in its entirety. A liquid cooling system is considered for a current generation electric vehicle, with time dependent heat generation rates within the battery cells based on vehicle operating conditions. Identifying the most efficient distribution of cooling within the battery pack to achieve uniform temperature is the objective of optimization. Simulations were performed on a complete battery pack model, featuring 288 battery cells and 144 cooling plates. Anisotropic material properties and non-uniform heat generation rates are included as well as energy demands based on a representative vehicle drive cycle. Results have shown that through design optimization, the standard deviation of temperature within the battery cells can be improved by as much as 80% when compared to a conventional design. The standard deviation of temperature saw improvement from an average of 0.2828 K for a conventional design to 0.05318 K after optimization. These results are specific to the given battery pack construction, battery cell, and cooling type. The method of modeling and analysis can be extended to many battery geometries and cooling technologies in the future. Application of design optimization to the problem of thermal iii management system design can yield significant improvements to battery pack thermal management, and thereby incrementally improve the efficiency of electrified vehicles.

Subjects/Keywords: Electric Vehicle Batteries ; Design Optimization

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APA (6^th Edition):

Bakker, J. (2013). Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/8443

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bakker, Jeremy. “Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution .” 2013. Thesis, Queens University. Accessed March 08, 2021. http://hdl.handle.net/1974/8443.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bakker, Jeremy. “Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution .” 2013. Web. 08 Mar 2021.

Vancouver:

Bakker J. Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution . [Internet] [Thesis]. Queens University; 2013. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1974/8443.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bakker J. Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution . [Thesis]. Queens University; 2013. Available from: http://hdl.handle.net/1974/8443

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ontario Institute of Technology

7. Cook, Adam George Mount. Front underride protection devices: design methodology for heavy vehicle crashworthiness.

Degree: 2016, University of Ontario Institute of Technology

URL: http://hdl.handle.net/10155/644

► North American Heavy Vehicles contribute to a third of all road fatalities in Canada. Head on collisions are one of the most severe, as the… (more)

▼ North American Heavy Vehicles contribute to a third of all road fatalities in Canada. Head on collisions are one of the most severe, as the mismatch of vehicle weight and sizing intensifies when a passenger vehicle is impacted. To improve crash safety, Front Underride Protection Devices (FUPDs) are a proposed solution to establishing a compatible collision between a passenger vehicle and a heavy vehicle. The European Union is among numerous administrations to regulate FUPDs, yet FUPDs are nonexistent in North America. Current regulations conform to European Cab-over Engine Tractors designs. Implementation of current regulations in North American conflicts with the widely driven Conventional Style Tractor due to the different design space for a FUPDs. This study builds on developing regulations for North America, and establishes a design methodology to developing and optimizing FUPDs for the Conventional Style Tractor enlightening the crashworthy importance of front underride protection devices to improving road safety. Advanced two stage optimization methodology was outlined to ensure industry targets are embedded with in the design to develop lightweight and cost effective devices. Recommendations for the modifications of the ECE R93 for Conventional Style Tractor are outlined; P1 load magnitudes requirements for FUPD stiffness should be increased from the regulated 80 kN to 160 kN to improve small overlap collisions. Regulated geometric parameters were recommended to have a minimal frontal contact height of 240mm, with ground clearance set between 350mm to 400mm. Geometric configurations were outlined and restricted to conform to the aerodynamic curvatures of the tractors bumper. After validation of the National Crash Analysis Center (NCAC) Toyota Yaris finite element analysis (FEA) model for side impact, the addition of a FUPD enhanced the survivability of passenger vehicle. The work achieved in enhancing the design methodology for industrial implementation and outlining regulations for North America. Advisors/Committee Members: El-Gindy, Moustafa.

Subjects/Keywords: Crashworthiness; FEA; Design; Structural; Optimization

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APA (6^th Edition):

Cook, A. G. M. (2016). Front underride protection devices: design methodology for heavy vehicle crashworthiness. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/644

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cook, Adam George Mount. “Front underride protection devices: design methodology for heavy vehicle crashworthiness.” 2016. Thesis, University of Ontario Institute of Technology. Accessed March 08, 2021. http://hdl.handle.net/10155/644.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cook, Adam George Mount. “Front underride protection devices: design methodology for heavy vehicle crashworthiness.” 2016. Web. 08 Mar 2021.

Vancouver:

Cook AGM. Front underride protection devices: design methodology for heavy vehicle crashworthiness. [Internet] [Thesis]. University of Ontario Institute of Technology; 2016. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10155/644.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cook AGM. Front underride protection devices: design methodology for heavy vehicle crashworthiness. [Thesis]. University of Ontario Institute of Technology; 2016. Available from: http://hdl.handle.net/10155/644

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ottawa

8. Al-Delaimi, Yassin. Probabilistic Approach for Design Optimization of Prestressed Girder Bridges Using Multi-Purpose Computer-Aided Model .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/35841

► Prestressed girder bridges are a very common type of bridges constructed all over the world. The girder bridges are ideal as short to medium spans… (more)

▼ Prestressed girder bridges are a very common type of bridges constructed all over the world. The girder bridges are ideal as short to medium spans (15 m to 60 m) structures, due to their moderate self-weight, structural efficiency, ease of fabrication, fast construction, low initial cost, long life expectancy, low maintenance, simple deck removal, and replacement process. Thus, the vast applicability of prestressed girder bridges provides the motivation to develop optimization methodologies, techniques, and models to optimize the design of these widely-used types of bridges, in order to achieve cost-effective design solutions. Most real-world structural engineering problems involve several elements of uncertainty (e.g. uncertainty in loading conditions, in material characteristics, in analysis/simulation model accuracy, in geometric properties, in manufacturing precision, etc). Such uncertainties need to be taken into consideration in the design process in order to achieve uniform levels of safety and consistent reliability in the structural systems. Consideration of uncertainties and variation of design parameters is made through probabilistic calibration of the design codes and specifications. For all current bridge design codes (e.g. AASHTO LRFD, CHBDC, or European code) no calibration is yet made to the Serviceability Limit State or Fatigue Limit State. Eventually, to date only Strength I limit state has been formally calibrated with reliability basis. Optimum designs developed without consideration of uncertainty associated with the design parameters can lead to non-robust designs, ones for which even slight changes in design variables and uncertain parameters can result in substantial performance degradation and localized damages. The accumulated damage may result in serviceability limitations or even collapse, although the structural design meets all code requirements for ultimate flexural and shear capacity. In order to search for the best optimization solution between cost reduction and satisfactory safety levels, probabilistic approaches of design optimization were applied to control the structural uncertainties throughout the design process, which cannot be achieved by deterministic optimization. To perform probabilistic design optimization, the basic design parameters were treated as random variables. For each random variable, the statistical distribution type was properly defined and the statistical parameters were accurately derived. After characterizing the random variables, in the current research, all the limit state functions were formulated and a comprehensive reliability analysis has been conducted to evaluate the bridge’s safely level (reliability index) with respect to every design limit state. For that purpose, a computer-aided model has been developed using Visual Basic Application (VBA). The probabilities of failure and corresponding reliability indexes determined by using the newly developed model, with respect to limit state functions considered, were obtained by the First-Order…

Subjects/Keywords: Bridges; Optimization; Reliability; Design

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APA (6^th Edition):

Al-Delaimi, Y. (2017). Probabilistic Approach for Design Optimization of Prestressed Girder Bridges Using Multi-Purpose Computer-Aided Model . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35841

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Al-Delaimi, Yassin. “Probabilistic Approach for Design Optimization of Prestressed Girder Bridges Using Multi-Purpose Computer-Aided Model .” 2017. Thesis, University of Ottawa. Accessed March 08, 2021. http://hdl.handle.net/10393/35841.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Al-Delaimi, Yassin. “Probabilistic Approach for Design Optimization of Prestressed Girder Bridges Using Multi-Purpose Computer-Aided Model .” 2017. Web. 08 Mar 2021.

Vancouver:

Al-Delaimi Y. Probabilistic Approach for Design Optimization of Prestressed Girder Bridges Using Multi-Purpose Computer-Aided Model . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10393/35841.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Al-Delaimi Y. Probabilistic Approach for Design Optimization of Prestressed Girder Bridges Using Multi-Purpose Computer-Aided Model . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/35841

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Chicago

9. Moon, Jeonghwa. Chemical Process Design under Uncertainty-Models and Algorithms for Global Optimization.

Degree: 2017, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/22195

► Uncertainty is a fundamental factor we should consider in process design because it is inherent characteristics of any process systems. For instance, physical properties of… (more)

▼ Uncertainty is a fundamental factor we should consider in process design because it is inherent characteristics of any process systems. For instance, physical properties of reactants, kinetics, or value of transfer coefficient are uncertain in the design stage. Also we expect disturbances – changes of flowrate, compositions, pressure, and temperature- during the operation. However, classical process design uses only nominal information of physical properties, transport phenomena, and reactions to find design variables in order to optimize process performance. In reality, the classical design procedure is not suitable because these parameters are not exactly known but have unavoidable variations, leading to uncertainty in the system. In addition, in practical operation the processes are exposed to changing conditions called dynamic disturbance, such us cooling water temperature or raw material quality that are dynamically changing. In order to accommodate uncertainties and dynamic disturbance in classic design, the process is usually oversized to minimize risk of operating outside specifications. However, this arbitrary overdesign does not guarantee feasibility and optimality of the process. Thus it is clear that consideration of uncertainty is necessary and important for the optimality and feasibility of operation of the chemical plant. The first aim of this thesis is to develop novel methodologies to tackle problems of classical approach for design under uncertainty. Two main topics in design under uncertainty –flexibility analysis and integrations of design and control dealt with this thesis. Part A addresses flexibility analysis of process. A new hybrid algorithm for flexibility analysis problem is suggested. Flexibility analysis is to quantify flexibility of a given process design to handle uncertainty in process parameters as well as variations in operating conditions. It is one of important problem in “design under uncertainty”. It is formulated as a multistage global optimization problem, whose search space is discontinuous and non-differentiable. Traditional local deterministic approaches cannot solve this problem properly, so I used a new approach based stochastic method and project technique to tackle this problem. This approach can be easily parallelized, so it reduces computational time when we solve large size problems. In part B, the problem of integrating design and control is addressed. Integration of design and control is finding an optimal design considering dynamic controllability. It aims at pursuing the synergetic power of a simultaneous approach to guarantee the economical and robust operation of the process in spite of any disturbance and uncertainty. However integration of design and control renders a complex combinatorial optimization problem which cannot be solved directly with existing mathematical methods. Thus we suggested a decomposition technique which eases the problems of this integration called embedded control optimization. In this thesis, I will extend embedded control… Advisors/Committee Members: Linninger, Andreas (advisor), Chmielewski, Donald (committee member), Diwekar, Urmila (committee member), Regalbuto, John (committee member), Teymour, Fouad (committee member), Wedgewood, Lewis (committee member), Linninger, Andreas (chair).

Subjects/Keywords: design under uncertainty; global optimization

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APA (6^th Edition):

Moon, J. (2017). Chemical Process Design under Uncertainty-Models and Algorithms for Global Optimization. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/22195

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moon, Jeonghwa. “Chemical Process Design under Uncertainty-Models and Algorithms for Global Optimization.” 2017. Thesis, University of Illinois – Chicago. Accessed March 08, 2021. http://hdl.handle.net/10027/22195.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moon, Jeonghwa. “Chemical Process Design under Uncertainty-Models and Algorithms for Global Optimization.” 2017. Web. 08 Mar 2021.

Vancouver:

Moon J. Chemical Process Design under Uncertainty-Models and Algorithms for Global Optimization. [Internet] [Thesis]. University of Illinois – Chicago; 2017. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10027/22195.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moon J. Chemical Process Design under Uncertainty-Models and Algorithms for Global Optimization. [Thesis]. University of Illinois – Chicago; 2017. Available from: http://hdl.handle.net/10027/22195

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Linköping University

10. Nezhadali, Vaheed. Multi-objective optimization of Industrial robots.

Degree: Machine Design, 2011, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113283

► Industrial robots are the most widely manufactured and utilized type of robots in industries. Improving the design process of industrial robots would lead to… (more)

Subjects/Keywords: CAD modeling; optimization; design framework

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APA (6^th Edition):

Nezhadali, V. (2011). Multi-objective optimization of Industrial robots. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113283

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nezhadali, Vaheed. “Multi-objective optimization of Industrial robots.” 2011. Thesis, Linköping University. Accessed March 08, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113283.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nezhadali, Vaheed. “Multi-objective optimization of Industrial robots.” 2011. Web. 08 Mar 2021.

Vancouver:

Nezhadali V. Multi-objective optimization of Industrial robots. [Internet] [Thesis]. Linköping University; 2011. [cited 2021 Mar 08]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113283.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nezhadali V. Multi-objective optimization of Industrial robots. [Thesis]. Linköping University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113283

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

11. Luesutthiviboon, Salil (author). Design of an Optimized Acoustic Array for Aero-acoustic Research in an Open-jet Anechoic Wind Tunnel.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:6b16e0f9-b038-4d53-bc3c-b07d7fbfe957

► This work aims to determine the optimal microphone placement on an acoustic array of TU Delft’s ‘V-tunnel’ which is used for beamforming in aero-acoustic studies.… (more)

Subjects/Keywords: Acoustic array; Optimization; Design

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APA (6^th Edition):

Luesutthiviboon, S. (. (2017). Design of an Optimized Acoustic Array for Aero-acoustic Research in an Open-jet Anechoic Wind Tunnel. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6b16e0f9-b038-4d53-bc3c-b07d7fbfe957

Chicago Manual of Style (16^th Edition):

Luesutthiviboon, Salil (author). “Design of an Optimized Acoustic Array for Aero-acoustic Research in an Open-jet Anechoic Wind Tunnel.” 2017. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:6b16e0f9-b038-4d53-bc3c-b07d7fbfe957.

MLA Handbook (7^th Edition):

Luesutthiviboon, Salil (author). “Design of an Optimized Acoustic Array for Aero-acoustic Research in an Open-jet Anechoic Wind Tunnel.” 2017. Web. 08 Mar 2021.

Vancouver:

Luesutthiviboon S(. Design of an Optimized Acoustic Array for Aero-acoustic Research in an Open-jet Anechoic Wind Tunnel. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:6b16e0f9-b038-4d53-bc3c-b07d7fbfe957.

Council of Science Editors:

Luesutthiviboon S(. Design of an Optimized Acoustic Array for Aero-acoustic Research in an Open-jet Anechoic Wind Tunnel. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:6b16e0f9-b038-4d53-bc3c-b07d7fbfe957

Delft University of Technology

12. Beijer, Bastiaan (author). Implementation of a collaborative environment to support the integration of 3^rd generation MDO frameworks.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:be77349c-e150-4f72-b71f-737b7a174867

►

Multidisciplinary Design Optimization (MDO) frameworks, capable of performing overall aircraft design studies become too complex to be comprehended by a single team of experts. Therefore,… (more)

Subjects/Keywords: Multidisciplinary Design Optimization; AGILE; MDO

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APA (6^th Edition):

Beijer, B. (. (2017). Implementation of a collaborative environment to support the integration of 3^rd generation MDO frameworks. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:be77349c-e150-4f72-b71f-737b7a174867

Chicago Manual of Style (16^th Edition):

Beijer, Bastiaan (author). “Implementation of a collaborative environment to support the integration of 3^rd generation MDO frameworks.” 2017. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:be77349c-e150-4f72-b71f-737b7a174867.

MLA Handbook (7^th Edition):

Beijer, Bastiaan (author). “Implementation of a collaborative environment to support the integration of 3^rd generation MDO frameworks.” 2017. Web. 08 Mar 2021.

Vancouver:

Beijer B(. Implementation of a collaborative environment to support the integration of 3^rd generation MDO frameworks. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:be77349c-e150-4f72-b71f-737b7a174867.

Council of Science Editors:

Beijer B(. Implementation of a collaborative environment to support the integration of 3^rd generation MDO frameworks. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:be77349c-e150-4f72-b71f-737b7a174867

University of Illinois – Urbana-Champaign

13. Luan, Siyao. Alternative design optimization formulations – developing and comparing for a vibration damping example.

Degree: MS, Industrial Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/98306

► Developing mathematical formulations for design problems requires determining an objective function to compare design alternatives, a set of design features and options to be included… (more)

▼ Developing mathematical formulations for design problems requires determining an objective function to compare design alternatives, a set of design features and options to be included for consideration, and a predictive model that reflect any unavoidable cause and effect relationships that are relevant. There are no formal principles guiding the formulation process, and heuristics prevail. There are some instances when the level of effort required to formulate the problem and solve the problem are excessive, not worth the improvement that might be realized in the overall design objective. In other words, a hypothetically “perfect” design problem formulation that takes all possible factors into account might be so difficult to fully compose and solve that it is not worth the effort. This thesis presents a set of guidelines for formulating design problems that seeks a middle ground. The method presented defines three different tasks in the formulation process: comparison metrics, predictive model and design representation. Each task offers opportunities for the practitioner to balance the expected quality of the solution with the level of effort and time required to reach that solution. This thesis demonstrates how using the guidelines can help create alternative formulations for the same design problem, and then how the resulting solutions can be evaluated and compared. Using a vibration absorber design example, the guidelines are enumerated, explained, and used to compose six alternative optimization formulations of the problem. These alternatives formulations vary in objective functions, decision variables, and some other design formulation practices. The overall goal is to maximize surface finish quality of a machined component processed on a platform to which the vibration absorber is attached. Vibrations of the platform can have a detrimental effect on surface quality. The goal of the vibration absorber system is to minimize these detrimental effects. The six alternative optimization formulations are subsequently solved, and their scores reflecting their complexity, computational time and solution quality are quantified and compared. The results illustrate the unavoidable tradeoffs among these three attributes. The best formulation depends on the set of tradeoffs that are best in that situation, given the decision maker’s risk attitude and preference. Advisors/Committee Members: Thurston, Deborah L (advisor).

Subjects/Keywords: Optimization formulation; Design guidelines

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APA (6^th Edition):

Luan, S. (2017). Alternative design optimization formulations – developing and comparing for a vibration damping example. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/98306

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Luan, Siyao. “Alternative design optimization formulations – developing and comparing for a vibration damping example.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed March 08, 2021. http://hdl.handle.net/2142/98306.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Luan, Siyao. “Alternative design optimization formulations – developing and comparing for a vibration damping example.” 2017. Web. 08 Mar 2021.

Vancouver:

Luan S. Alternative design optimization formulations – developing and comparing for a vibration damping example. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/2142/98306.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Luan S. Alternative design optimization formulations – developing and comparing for a vibration damping example. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/98306

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Windsor

14. Mavrinac, Aaron. Modeling and Optimizing the Coverage of Multi-Camera Systems.

Degree: PhD, Electrical and Computer Engineering, 2012, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5372

► This thesis approaches the problem of modeling a multi-camera system's performance from system and task parameters by describing the relationship in terms of coverage.… (more)

▼ This thesis approaches the problem of modeling a multi-camera system's performance from system and task parameters by describing the relationship in terms of coverage. This interface allows a substantial separation of the two concerns: the ability of the system to obtain data from the space of possible stimuli, according to task requirements, and the description of the set of stimuli required for the task. The conjecture is that for any particular system, it is in principle possible to develop such a model with ideal prediction of performance. Accordingly, a generalized structure and tool set is built around the core mathematical definitions of task-oriented coverage, without tying it to any particular model. A family of problems related to coverage in the context of multi-camera systems is identified and described. A comprehensive survey of the state of the art in approaching such problems concludes that by coupling the representation of coverage to narrow problem cases and applications, and by attempting to simplify the models to fit optimization techniques, both the generality and the fidelity of the models are reduced. It is noted that models exhibiting practical levels of fidelity are well beyond the point where only metaheuristic optimization techniques are applicable. Armed with these observations and a promising set of ideas from surveyed sources, a new high-fidelity model for multi-camera vision based on the general coverage framework is presented. This model is intended to be more general in scope than previous work, and despite the complexity introduced by the multiple criteria required for fidelity, it conforms to the framework and is thus tractable for certain optimization approaches. Furthermore, it is readily extended to different types of vision systems. This thesis substantiates all of these claims. The model's fidelity and generality is validated and compared to some of the more advanced models from the literature. Three of the aforementioned coverage problems are then approached in application cases using the model. In one case, a bistatic variant of the sensing modality is used, requiring a modification of the model; the compatibility of this modification, both conceptually and mathematically, illustrates the generality of the framework. Advisors/Committee Members: Xiang Chen.

Subjects/Keywords: camera; design; modeling; optimization

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APA (6^th Edition):

Mavrinac, A. (2012). Modeling and Optimizing the Coverage of Multi-Camera Systems. (Doctoral Dissertation). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5372

Chicago Manual of Style (16^th Edition):

Mavrinac, Aaron. “Modeling and Optimizing the Coverage of Multi-Camera Systems.” 2012. Doctoral Dissertation, University of Windsor. Accessed March 08, 2021. https://scholar.uwindsor.ca/etd/5372.

MLA Handbook (7^th Edition):

Mavrinac, Aaron. “Modeling and Optimizing the Coverage of Multi-Camera Systems.” 2012. Web. 08 Mar 2021.

Vancouver:

Mavrinac A. Modeling and Optimizing the Coverage of Multi-Camera Systems. [Internet] [Doctoral dissertation]. University of Windsor; 2012. [cited 2021 Mar 08]. Available from: https://scholar.uwindsor.ca/etd/5372.

Council of Science Editors:

Mavrinac A. Modeling and Optimizing the Coverage of Multi-Camera Systems. [Doctoral Dissertation]. University of Windsor; 2012. Available from: https://scholar.uwindsor.ca/etd/5372

University of Arizona

15. Clutter, Melissa Jean. Designing Robust Measurement Networks Using Universal Multiple Linear Regression .

Degree: 2019, University of Arizona

URL: http://hdl.handle.net/10150/633093

► Collecting hydrological data is essential for understanding system behavior and processes; without it, there is no basis for predictive modeling or risk assessment. Unfortunately, limited… (more)

▼ Collecting hydrological data is essential for understanding system behavior and processes; without it, there is no basis for predictive modeling or risk assessment. Unfortunately, limited monitoring budgets often restrict measurement designs for field-based studies. Therefore, most field studies require some sort of data worth analysis to identify the most important data to collect with respect to the prediction(s) of interest. Data worth analyses can be either informal using methods such as trial-and-error, intuition, or rules of thumb, or formal using a quantitative metric to identify the most valuable data. My research focuses on a simple, computationally inexpensive formal data worth analysis which can be used in conjunction with more complex optimization approaches or when they are not warranted. A key to network design is that the selection of sensor type, timing, and placement should be both informative and efficient. There are many possible individual sensor types and installation depths, and the key is to determine which sets of observations would be most effective prior to data collection. My research explores a combination of a method called universal Multiple Linear Regression (uMLR) and Robust Decision Making (RDM) to identify these best observation sets. The uMLR method quantifies the explanatory power of all possible combinations of observations to the prediction(s) of interest and the RDM strategy further explores the impacts of user-defined uncertainties, including measurement error and parameter uncertainty, on these observation-set selections. Robust Decision Making is a concept developed by the Research and Development (RAND) Corporation and is designed to select a robust outcome under a range of uncertainty, at the risk of the selection being sub-optimal for any one specific uncertain outcome. Norgaard et al., (2014) previously used the uMLR approach to downsampling pre-existing data to identify a reduced set of parameters to describe the dispersibility of colloids. I offer an extension of the uMLR downsampling approach, based on model-simulated data, to consider optimizing data that have not yet been collected. Advisors/Committee Members: Ferre, Ty (advisor), Meixner, Thomas (committeemember), Schaap, Marcel (committeemember).

Subjects/Keywords: design; linear regression; measurement; optimization

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APA (6^th Edition):

Clutter, M. J. (2019). Designing Robust Measurement Networks Using Universal Multiple Linear Regression . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/633093

Chicago Manual of Style (16^th Edition):

Clutter, Melissa Jean. “Designing Robust Measurement Networks Using Universal Multiple Linear Regression .” 2019. Doctoral Dissertation, University of Arizona. Accessed March 08, 2021. http://hdl.handle.net/10150/633093.

MLA Handbook (7^th Edition):

Clutter, Melissa Jean. “Designing Robust Measurement Networks Using Universal Multiple Linear Regression .” 2019. Web. 08 Mar 2021.

Vancouver:

Clutter MJ. Designing Robust Measurement Networks Using Universal Multiple Linear Regression . [Internet] [Doctoral dissertation]. University of Arizona; 2019. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10150/633093.

Council of Science Editors:

Clutter MJ. Designing Robust Measurement Networks Using Universal Multiple Linear Regression . [Doctoral Dissertation]. University of Arizona; 2019. Available from: http://hdl.handle.net/10150/633093

Virginia Tech

16. Wagner, Katherine Mott. Optimization of Disaggregated Space Systems Using the Disaggregated Integral Systems Concept Optimization Technology Methodology.

Degree: PhD, Aerospace Engineering, 2020, Virginia Tech

URL: http://hdl.handle.net/10919/99338

► Civilians, businesses, and the government all rely on space-based resources for their daily operations. For example, the signal provided by GPS satellites is used by… (more)

Subjects/Keywords: disaggregation; constellation design; DSS; optimization

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APA (6^th Edition):

Wagner, K. M. (2020). Optimization of Disaggregated Space Systems Using the Disaggregated Integral Systems Concept Optimization Technology Methodology. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/99338

Chicago Manual of Style (16^th Edition):

Wagner, Katherine Mott. “Optimization of Disaggregated Space Systems Using the Disaggregated Integral Systems Concept Optimization Technology Methodology.” 2020. Doctoral Dissertation, Virginia Tech. Accessed March 08, 2021. http://hdl.handle.net/10919/99338.

MLA Handbook (7^th Edition):

Wagner, Katherine Mott. “Optimization of Disaggregated Space Systems Using the Disaggregated Integral Systems Concept Optimization Technology Methodology.” 2020. Web. 08 Mar 2021.

Vancouver:

Wagner KM. Optimization of Disaggregated Space Systems Using the Disaggregated Integral Systems Concept Optimization Technology Methodology. [Internet] [Doctoral dissertation]. Virginia Tech; 2020. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10919/99338.

Council of Science Editors:

Wagner KM. Optimization of Disaggregated Space Systems Using the Disaggregated Integral Systems Concept Optimization Technology Methodology. [Doctoral Dissertation]. Virginia Tech; 2020. Available from: http://hdl.handle.net/10919/99338

Delft University of Technology

17. van der Heyden, L. (author). Exploring the Kuiper Belt: Design of trajectories for long-term Kuiper Belt exploration.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f5033eb5-148c-4c7f-a95b-8cee6d25c3d3

►

Previous trajectory proposals with the purpose of exploring the Kuiper Belt have been limited to identifying trajectories to fly by a single pre-selected Kuiper Belt… (more)

▼

Previous trajectory proposals with the purpose of exploring the Kuiper Belt have been limited to identifying trajectories to fly by a single pre-selected Kuiper Belt Object (KBO). Furthermore, these proposals were often limited to high-velocity flybys that pass through the Kuiper Belt in a limited number of years, or are based on the assumption of significant and uncertain technological advances. This thesis investigates the existence of currently feasible trajectories which position a spacecraft inside the Kuiper Belt for a significantly longer period of time. The feasibility of these trajectories is based on the assumption of current technological capabilities and a launch date between the years 2025 and 2040. To model these unique trajectories the conventional MGA-1DSM trajectory model is adapted in order to optimize trajectory problems that aim to reach the Kuiper Belt. The use of powered flybys is excluded in these problems in order to reduce problem and mission complexity. Optimization of the trajectory problems was done by performing an interactive multi-objective optimization approach with four distinct objectives on a set of twenty planetary sequences. The high complexity of these problems in combination with conflicting multiple objectives was found to necessitate an iterative optimization process using the pooled results of several algorithms in order to obtain satisfactory results. The optimization algorithm performance was further enhanced using various encouragement methods. By using the established optimization method multiple routes were identified that all culminate in a long-duration flight through the Kuiper Belt. The best results were found with planetary flyby sequences VVEJS, EVEEJN, and JN. The required launch energy (C3) for these trajectories ranges from 16 km² /s² , for sequences utilizing multiple inner planet flybys, to 75.5 km²/s² , for solutions utilizing adirect Jupiter-Neptune route. The maximum onboard delta V capability required for these solutions is 400 m/s. The flight time to the inner boundary of the Kuiper Belt ranges from 14.6 to 24 years. All thesetrajectories feature a flight time through the Kuiper Belt of well over or close to 100 years. In addition, it was found that trajectories that conclude their planetary flyby sequence with a Jupiter-Neptune leg are found to be especially well suited for long-duration Kuiper Belt flight.

Aeronautical Engineering

Advisors/Committee Members: Noomen, R. (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Kuiper Belt; Trajectory Design; Optimization

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APA (6^th Edition):

van der Heyden, L. (. (2020). Exploring the Kuiper Belt: Design of trajectories for long-term Kuiper Belt exploration. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f5033eb5-148c-4c7f-a95b-8cee6d25c3d3

Chicago Manual of Style (16^th Edition):

van der Heyden, L (author). “Exploring the Kuiper Belt: Design of trajectories for long-term Kuiper Belt exploration.” 2020. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:f5033eb5-148c-4c7f-a95b-8cee6d25c3d3.

MLA Handbook (7^th Edition):

van der Heyden, L (author). “Exploring the Kuiper Belt: Design of trajectories for long-term Kuiper Belt exploration.” 2020. Web. 08 Mar 2021.

Vancouver:

van der Heyden L(. Exploring the Kuiper Belt: Design of trajectories for long-term Kuiper Belt exploration. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:f5033eb5-148c-4c7f-a95b-8cee6d25c3d3.

Council of Science Editors:

van der Heyden L(. Exploring the Kuiper Belt: Design of trajectories for long-term Kuiper Belt exploration. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:f5033eb5-148c-4c7f-a95b-8cee6d25c3d3

Virginia Tech

18. Butt, Lauren Marie. Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing.

Degree: MS, Aerospace and Ocean Engineering, 2011, Virginia Tech

URL: http://hdl.handle.net/10919/42641

► High aspect-ratio, long-endurance aircraft require different design modeling from those with traditional moderate aspect ratios. High aspect-ratio, long endurance aircraft are generally more flexible structures… (more)

Subjects/Keywords: Design Optimization; Aeroelasticity; Inflatable Wings

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APA (6^th Edition):

Butt, L. M. (2011). Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/42641

Chicago Manual of Style (16^th Edition):

Butt, Lauren Marie. “Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing.” 2011. Masters Thesis, Virginia Tech. Accessed March 08, 2021. http://hdl.handle.net/10919/42641.

MLA Handbook (7^th Edition):

Butt, Lauren Marie. “Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing.” 2011. Web. 08 Mar 2021.

Vancouver:

Butt LM. Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing. [Internet] [Masters thesis]. Virginia Tech; 2011. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10919/42641.

Council of Science Editors:

Butt LM. Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing. [Masters Thesis]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/42641

Delft University of Technology

19. van Baalen, Sander (author). Topology Optimised Pedestrian Bridge: A feasibility study in using Topology Optimisation as a design tool for bridge design.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:6184bd62-63d2-4929-ae94-7f549149f5a5

►

Research in using Topology optimisation as a tool to improve the design process of bridge design. The research focuses on implementing Topology optimisation in the… (more)

Subjects/Keywords: Topology; Bridge; Design; Optimisation; Optimization

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APA (6^th Edition):

van Baalen, S. (. (2017). Topology Optimised Pedestrian Bridge: A feasibility study in using Topology Optimisation as a design tool for bridge design. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6184bd62-63d2-4929-ae94-7f549149f5a5

Chicago Manual of Style (16^th Edition):

van Baalen, Sander (author). “Topology Optimised Pedestrian Bridge: A feasibility study in using Topology Optimisation as a design tool for bridge design.” 2017. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:6184bd62-63d2-4929-ae94-7f549149f5a5.

MLA Handbook (7^th Edition):

van Baalen, Sander (author). “Topology Optimised Pedestrian Bridge: A feasibility study in using Topology Optimisation as a design tool for bridge design.” 2017. Web. 08 Mar 2021.

Vancouver:

van Baalen S(. Topology Optimised Pedestrian Bridge: A feasibility study in using Topology Optimisation as a design tool for bridge design. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:6184bd62-63d2-4929-ae94-7f549149f5a5.

Council of Science Editors:

van Baalen S(. Topology Optimised Pedestrian Bridge: A feasibility study in using Topology Optimisation as a design tool for bridge design. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:6184bd62-63d2-4929-ae94-7f549149f5a5

University of Michigan

20. Bons, Nicolas. High-Fidelity Wing Design Exploration with Gradient-Based Optimization.

Degree: PhD, Aerospace Engineering, 2020, University of Michigan

URL: http://hdl.handle.net/2027.42/163242

► Numerical optimization has been applied to wing design problems for over 40 years. Over the decades, the scope and detail of optimization problems have advanced… (more)

Subjects/Keywords: multidisciplinary design optimization; aerostructural optimization; wing design optimization; multimodality in wing design; practical wing design optimization; Aerospace Engineering; Engineering

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APA (6^th Edition):

Bons, N. (2020). High-Fidelity Wing Design Exploration with Gradient-Based Optimization. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/163242

Chicago Manual of Style (16^th Edition):

Bons, Nicolas. “High-Fidelity Wing Design Exploration with Gradient-Based Optimization.” 2020. Doctoral Dissertation, University of Michigan. Accessed March 08, 2021. http://hdl.handle.net/2027.42/163242.

MLA Handbook (7^th Edition):

Bons, Nicolas. “High-Fidelity Wing Design Exploration with Gradient-Based Optimization.” 2020. Web. 08 Mar 2021.

Vancouver:

Bons N. High-Fidelity Wing Design Exploration with Gradient-Based Optimization. [Internet] [Doctoral dissertation]. University of Michigan; 2020. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/2027.42/163242.

Council of Science Editors:

Bons N. High-Fidelity Wing Design Exploration with Gradient-Based Optimization. [Doctoral Dissertation]. University of Michigan; 2020. Available from: http://hdl.handle.net/2027.42/163242

Louisiana State University

21. Zhang, Ying. Exploiting heterogeneity in Chip-Multiprocessor Design.

Degree: PhD, Electrical and Computer Engineering, 2013, Louisiana State University

URL: etd-10042013-162109 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3918

► In the past decade, semiconductor manufacturers are persistent in building faster and smaller transistors in order to boost the processor performance as projected by Moore’s… (more)

Subjects/Keywords: heterogeneity; design space exploration; design optimization; scheduling

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APA (6^th Edition):

Zhang, Y. (2013). Exploiting heterogeneity in Chip-Multiprocessor Design. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-10042013-162109 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3918

Chicago Manual of Style (16^th Edition):

Zhang, Ying. “Exploiting heterogeneity in Chip-Multiprocessor Design.” 2013. Doctoral Dissertation, Louisiana State University. Accessed March 08, 2021. etd-10042013-162109 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3918.

MLA Handbook (7^th Edition):

Zhang, Ying. “Exploiting heterogeneity in Chip-Multiprocessor Design.” 2013. Web. 08 Mar 2021.

Vancouver:

Zhang Y. Exploiting heterogeneity in Chip-Multiprocessor Design. [Internet] [Doctoral dissertation]. Louisiana State University; 2013. [cited 2021 Mar 08]. Available from: etd-10042013-162109 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3918.

Council of Science Editors:

Zhang Y. Exploiting heterogeneity in Chip-Multiprocessor Design. [Doctoral Dissertation]. Louisiana State University; 2013. Available from: etd-10042013-162109 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3918

Carnegie Mellon University

22. Ulu, Erva. Enhancing the Structural Performance of Additively Manufactured Objects.

Degree: 2018, Carnegie Mellon University

URL: http://repository.cmu.edu/dissertations/1188

► The ability to accurately quantify the performance an additively manufactured (AM) product is important for a widespread industry adoption of AM as the design is… (more)

Subjects/Keywords: additive manufacturing; computational design; fabrication; shape optimization; structural optimization; topology optimization

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APA (6^th Edition):

Ulu, E. (2018). Enhancing the Structural Performance of Additively Manufactured Objects. (Thesis). Carnegie Mellon University. Retrieved from http://repository.cmu.edu/dissertations/1188

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ulu, Erva. “Enhancing the Structural Performance of Additively Manufactured Objects.” 2018. Thesis, Carnegie Mellon University. Accessed March 08, 2021. http://repository.cmu.edu/dissertations/1188.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ulu, Erva. “Enhancing the Structural Performance of Additively Manufactured Objects.” 2018. Web. 08 Mar 2021.

Vancouver:

Ulu E. Enhancing the Structural Performance of Additively Manufactured Objects. [Internet] [Thesis]. Carnegie Mellon University; 2018. [cited 2021 Mar 08]. Available from: http://repository.cmu.edu/dissertations/1188.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ulu E. Enhancing the Structural Performance of Additively Manufactured Objects. [Thesis]. Carnegie Mellon University; 2018. Available from: http://repository.cmu.edu/dissertations/1188

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado School of Mines

23. Hamilton, William T. Design and dispatch of concentrating solar power tower systems with utility-scale photovoltaics.

Degree: PhD, Mechanical Engineering, 2019, Colorado School of Mines

URL: http://hdl.handle.net/11124/173973

► By utilizing inexpensive thermal energy storage, concentrating solar power (CSP) can provide dispatchable, stable, and renewable electricity generation; however, current system capital costs are uneconomical… (more)

▼ By utilizing inexpensive thermal energy storage, concentrating solar power (CSP) can provide dispatchable, stable, and renewable electricity generation; however, current system capital costs are uneconomical for widespread deployment. Conversely, the costs of photovoltaic (PV) systems have dropped significantly in the last decade, which has led to extensive market adoption. Coupling PV systems with batteries can mitigate much of their generation variability; however, the current battery costs are uneconomical to utilize as a grid-scale storage medium. To compete in solar energy-dominated markets while taking advantage of the relative strengths of both technologies, CSP could dispatch electricity around PV generation, resulting a hybridization of the two technologies, referred to as a CSP-PV hybrid. Due to the limited availability of solar resource and storage capacity, CSP-PV hybrid system design and operational decisions are critical to overall economics. This dissertation presents a methodology for evaluating CSP-PV hybrid systems, which includes: (i) integrating CSP and PV simulation modules using a Python wrapper, (ii) expanding a profit-maximizing mixed-integer linear program that provides a dispatch strategy, (iii) implementing solution techniques to improve model tractability, (iv) modeling a molten salt-driven Rankine cycle to characterize off-design performance, and (v) utilizing derivative-free, or "black-box," algorithms to perform system-level design optimization. For CSP-PV hybrid system dispatch at sub-hourly fidelity, we develop solution techniques to reduce solve times by as much as 93%. Additionally, we assess that CSP-PV hybrid systems can almost double capacity factors while improving various economic metrics by as much as 30%. Lastly, we determine that minimizing power purchase agreement price for CSP-PV hybrid design optimization results in systems with capacity factors less than 62%, but nonetheless with greater than 90% reliability. Advisors/Committee Members: Braun, Robert J. (advisor), Newman, Alexandra M. (advisor), Jackson, Gregory (committee member), Porter, Jason M. (committee member), Flamand, Tulay (committee member), Guerra, Andres (committee member).

Subjects/Keywords: design optimization; off-design performance; dispatch optimization; concentrating solar power

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APA (6^th Edition):

Hamilton, W. T. (2019). Design and dispatch of concentrating solar power tower systems with utility-scale photovoltaics. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/173973

Chicago Manual of Style (16^th Edition):

Hamilton, William T. “Design and dispatch of concentrating solar power tower systems with utility-scale photovoltaics.” 2019. Doctoral Dissertation, Colorado School of Mines. Accessed March 08, 2021. http://hdl.handle.net/11124/173973.

MLA Handbook (7^th Edition):

Hamilton, William T. “Design and dispatch of concentrating solar power tower systems with utility-scale photovoltaics.” 2019. Web. 08 Mar 2021.

Vancouver:

Hamilton WT. Design and dispatch of concentrating solar power tower systems with utility-scale photovoltaics. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2019. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/11124/173973.

Council of Science Editors:

Hamilton WT. Design and dispatch of concentrating solar power tower systems with utility-scale photovoltaics. [Doctoral Dissertation]. Colorado School of Mines; 2019. Available from: http://hdl.handle.net/11124/173973

Virginia Tech

24. Locatelli, Davide. Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs.

Degree: PhD, Engineering Science and Mechanics, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/26345

► This dissertation investigates the advantages of using curvilinear spars and ribs, termed SpaRibs, to design supersonic aircraft wing-box in comparison to the use of classic… (more)

▼ This dissertation investigates the advantages of using curvilinear spars and ribs, termed SpaRibs, to design supersonic aircraft wing-box in comparison to the use of classic design concepts that employ straight spars and ribs. The intent is to achieve a more efficient load-bearing mechanism and to passively control aeorelastic behavior of the structure under the flight loads. The use of SpaRibs broadens the design space and allows for the natural frequencies and natural mode shape tailoring. The SpaRibs concept is implemented in a new MATLAB-based optimization framework referred to as EBF3SSWingOpt. This framework interfaces different analysis software to perform the tasks required. VisualDOC is used as optimizer; the generation of the SpaRibs geometry and of the structure Finite Element Model (FEM) is performed by MD.PATRAN; MD.NASTRAN is utilized to compute the weight of the structure, the linear static stress analysis and the linear buckling analysis required for the calculation of the response functions. EBF3SSWingOpt optimization scheme performs both the sizing and the shaping of the internal structural elements. Two methods are compared while optimizing the wing-box; a One-Step method in which sizing and topology optimization are carried out simultaneously and a Two-Step method, in which the sizing and topology optimization are carried out separately but in an iterative way. The optimization problem statements for the One-Step and the Two-Step methodologies are presented. Three methods to define the shape of the SpaRibs parametrically are described: (1) the Bounding Box and Base Curves method defines the shape of the SpaRibs based on the shape of two curves called Base Curves which are positioned into the Bounding Box, a rectangular region defined on the plane z=0 and containing the projection of the wing plan-form onto the same plane; (2) the Linked Shape method defines the shape of a set of SpaRibs in a one by one square domain of the natural space. The set of curves is subsequently transformed in the physical space for creating the wing structure geometry layout. The shape of each curve of each set is unique however, mathematical relations link their curvature in an effort to reduce the number of design variables; and (3) the Independent Shape parameterization is similar to the Linked Shape parameterization however, the shape of each curve is unique. The framework and parameterization methods described are applied to optimize different types of wing structures. Following results are presented and discussed: (1) a rectangular wing-box subjected to a chord-wise linearly varying load, optimized using SpaRibs parameterized with Bounding-Box and Base Curves method; (2) a rectangular wing-box subjected to a chord-wise linearly varying load, optimized using SpaRibs parameterized with Linked Shape method; (3) a generic fighter wing subjected to uniform distributed pressure load, optimized using SpaRibs parameterized with Bounding-Box and Base Curves method; (4) a general business jet wing subjected to pull-up… Advisors/Committee Members: Kapania, Rakesh K. (committeechair), Singh, Mahendra P. (committee member), Patil, Mayuresh J. (committee member), Thangjitham, Surot (committee member), Schetz, Joseph A. (committee member).

Subjects/Keywords: Structural Optimization; Wing Optimization; SpaRibs; Aircraft Design; Particle Swarm Optimization; Supersonic Aircraft Design

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APA (6^th Edition):

Locatelli, D. (2012). Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/26345

Chicago Manual of Style (16^th Edition):

Locatelli, Davide. “Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs.” 2012. Doctoral Dissertation, Virginia Tech. Accessed March 08, 2021. http://hdl.handle.net/10919/26345.

MLA Handbook (7^th Edition):

Locatelli, Davide. “Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs.” 2012. Web. 08 Mar 2021.

Vancouver:

Locatelli D. Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10919/26345.

Council of Science Editors:

Locatelli D. Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/26345

25. Cook, Laurence William. Effective formulations of optimization under uncertainty for aerospace design.

Degree: PhD, 2018, University of Cambridge

URL: https://doi.org/10.17863/CAM.23427 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744871

► Formulations of optimization under uncertainty (OUU) commonly used in aerospace design—those based on treating statistical moments of the quantity of interest (QOI) as separate objectives—can… (more)

▼ Formulations of optimization under uncertainty (OUU) commonly used in aerospace design—those based on treating statistical moments of the quantity of interest (QOI) as separate objectives—can result in stochastically dominated designs. A stochastically dominated design is undesirable, because it is less likely than another design to achieve a QOI at least as good as a given value, for any given value. As a remedy to this limitation for the multi-objective formulation of moments, a novel OUU formulation is proposed—dominance optimization. This formulation seeks a set of solutions and makes use of global optimizers, so is useful for early stages of the design process when exploration of design space is important. Similarly, to address this limitation for the single-objective formulation of moments (combining moments via a weighted sum), a second novel formulation is proposed—horsetail matching. This formulation can make use of gradient- based local optimizers, so is useful for later stages of the design process when exploitation of a region of design space is important. Additionally, horsetail matching extends straightforwardly to different representations of uncertainty, and is flexible enough to emulate several existing OUU formulations. Existing multi-fidelity methods for OUU are not compatible with these novel formulations, so one such method—information reuse—is generalized to be compatible with these and other formulations. The proposed formulations, along with generalized information reuse, are compared to their most comparable equivalent in the current state-of-the-art on practical design problems: transonic aerofoil design, coupled aero-structural wing design, high-fidelity 3D wing design, and acoustic horn shape design. Finally, the two novel formulations are combined in a two-step design process, which is used to obtain a robust design in a challenging version of the acoustic horn design problem. Dominance optimization is given half the computational budget for exploration; then horsetail matching is given the other half for exploitation. Using exactly the same computational budget as a moment-based approach, the design obtained using the novel formulations is 95% more likely to achieve a better QOI than the best value achievable by the moment-based design.

Subjects/Keywords: 629.134; Optimization; Robust Optimization; Optimization Under Uncertainty; Design; Design Optimization; Aerospace Design; Aerofoil Design; Uncertainty Quantification; Monte Carlo; Multi-Fidelity; Information Reuse; Wing Design; Aero-Structural Design

12 more images…

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APA (6^th Edition):

Cook, L. W. (2018). Effective formulations of optimization under uncertainty for aerospace design. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.23427 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744871

Chicago Manual of Style (16^th Edition):

Cook, Laurence William. “Effective formulations of optimization under uncertainty for aerospace design.” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 08, 2021. https://doi.org/10.17863/CAM.23427 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744871.

MLA Handbook (7^th Edition):

Cook, Laurence William. “Effective formulations of optimization under uncertainty for aerospace design.” 2018. Web. 08 Mar 2021.

Vancouver:

Cook LW. Effective formulations of optimization under uncertainty for aerospace design. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 08]. Available from: https://doi.org/10.17863/CAM.23427 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744871.

Council of Science Editors:

Cook LW. Effective formulations of optimization under uncertainty for aerospace design. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://doi.org/10.17863/CAM.23427 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744871

Delft University of Technology

26. De Marco, Andrea (author). Application of Evolutionary Structural Optimization to Reinforced Concrete Structures.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:efd1ad24-017f-48ac-8e31-184339a9d148

► The present thesis has the objective to create a procedure for the automatic preliminary design of reinforced concrete structures, based on the Evolutionary Structural Optimization… (more)

▼ The present thesis has the objective to create a procedure for the automatic preliminary design of reinforced concrete structures, based on the Evolutionary Structural Optimization method (ESO). The developed algorithm performs heuristic topology optimization based on multiple criteria, in subsequent optimization cycles executed in series. In each ESO cycle, it is possible to perform material addition, removal or transition between a couple of materials, i.e. steel, concrete and void. Each optimization cycle is governed by an optimality criterion chosen from: stiffness, Von Mises, Drucker-Prager, tension stress criteria or linear interpolation of previous ones. The finite element analysis used in the algorithm regards all materials as linear elastic. The reaching of maximum strength and failure of materials is not taken into account. The automated design process of reinforced concrete structures has been separated in two problems: the form-finding of reinforced concrete structure as a whole and the definition of internal distribution between steel and concrete. The first problem is solved, in the first optimization cycle, with a ``standard'' ESO procedure, with the only difference in choosing a Von Mises optimization criterion over a ``classical'' stiffness criterion. The second problem is solved, in the second and third optimization cycles, combining in series two additional ``modified'' ESO procedures and introducing gradual transition in optimization criteria through linear interpolation of sensitivity numbers. The combined criteria for the second cycle are a Von Mises and Drucker-Prager optimization criteria, while for the third cycle, a Drucker-Prager and tensile stress optimization criteria. Moreover, additional geometrical constraints are applied, to ensure a set minimal distance between steel and outer boundaries, i.e. concrete cover, and to ensure optimal angle preservation for steel members found during optimization, introducing two new ``density'' matrices called \emph{cover} and \emph{mask}. Summarizing, the preliminary design of reinforced concrete structures is dealt with three cycles of ESO optimization procedures executed in series, with optimization criteria that gradually change with continuity between the different cycles over the whole process. The developed procedure has been tested on several case studies, both from ESO and reinforced concrete literature. The defined ESO process has been found to generate solutions with steel correctly placed in tensile stress zones both to resist bending and shear. Generally, the presence of remaining tensile stresses in concrete zones in the solutions is absent or very limited, and in latter cases their magnitude is very small compared to other stresses. Obtained solutions cannot be directly used as such for reinforcement layouts definition but, in combination with principal stresses plots and engineering judgement, they are able to suggest useful resulting reinforcement layouts. As result of the specificities introduced for… Advisors/Committee Members: Hendriks, Max (mentor), Rots, Jan (graduation committee), Braam, Rene (graduation committee), Langelaar, Matthijs (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Evolutionary Structural Optimization; Bi-directional Evolutionary Structural Optimization; Computational Optimization; Topology Optimization; Structural Optimization; Heuristic Optimization; ESO; BESO; Optimization Algorithm; Optimization Procedure; Reinforced Concrete Structures; Reinforced Concrete Design; Reinforced Concrete

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APA (6^th Edition):

De Marco, A. (. (2018). Application of Evolutionary Structural Optimization to Reinforced Concrete Structures. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:efd1ad24-017f-48ac-8e31-184339a9d148

Chicago Manual of Style (16^th Edition):

De Marco, Andrea (author). “Application of Evolutionary Structural Optimization to Reinforced Concrete Structures.” 2018. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:efd1ad24-017f-48ac-8e31-184339a9d148.

MLA Handbook (7^th Edition):

De Marco, Andrea (author). “Application of Evolutionary Structural Optimization to Reinforced Concrete Structures.” 2018. Web. 08 Mar 2021.

Vancouver:

De Marco A(. Application of Evolutionary Structural Optimization to Reinforced Concrete Structures. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:efd1ad24-017f-48ac-8e31-184339a9d148.

Council of Science Editors:

De Marco A(. Application of Evolutionary Structural Optimization to Reinforced Concrete Structures. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:efd1ad24-017f-48ac-8e31-184339a9d148

Delft University of Technology

27. Vergeer, Michael (author). Structural topology optimization of an active motion compensated gangway.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:ab92c1fb-a5b1-4302-b2b4-fcd36b84f0dc

► In the offshore industry, there is a growing demand for designing efficient, sustainable and competitive products. In order to fulfil the component requirements, a method… (more)

▼ In the offshore industry, there is a growing demand for designing efficient, sustainable and competitive products. In order to fulfil the component requirements, a method named topology optimization can be applied. This is a mathematical design method which can be used in the early phases of the design process.At IHC there is an interest of applying topology optimization for their equipment development process. Therefore the possibilities and limitations of the method should be investigated thoroughly. The research covers the optimization process of a motion compensated gangway. A motion compensated gangway is a walkway which can be used to provide access from the transport vessel to the offshore structure. Its function is to transport people and cargo safely from the ship to the offshore structure or vice versa. The goal of this research was to determine to what extent topology optimization can be used in the design of a motion compensated gangway. Finding an optimized result in terms of weight and stiffness by using this mathematical method which satisfies all the requirements. The structural optimization is carried out with several commercial software packages which are compared by using a multi-criteria analysis. During the optimization process it has been found that there are essentially two stages in the optimization process. In the first stage, the topology or beam orientation of the structure is defined by the topology optimization process. In this part the concept of the design is generated. Variation of the optimization parameters was used in order to develop an efficient structure. The objective for the optimizer was to minimize the compliance of the structure for a certain volume fraction. In the second stage, the dimensions of all the beams and elements are defined by performing a size optimization. A line model is generated which represents the orientation of the members in the structure. During the size optimization the shape and the dimensions of the members are defined in order to fulfill the objective. The objective is to minimize the mass of the structure while constraints are defined for the maximum allowable stresses in the members and the maximum vertical deflection of the structure. This post-processing step is required in order to obtain a feasible design. The structural stability of the gangway was improved by performing a linear buckling analysis and by adapting the structure in order to reduce the buckling behaviour. In the final step of the optimization process, a CAD drawing is generated. This model is analysed by performing a finite element analysis. This showed that the new optimized design satisfies all the requirements which are stated by the DNV for designing a motion compensated gangway. The combination of the topology and size optimization resulted in a new design which yielded a weight reduction of 36,4% compared to the current design. The weight was reduced from 13,08 ton to 8,31 ton, while still satisfying all the constraints.… Advisors/Committee Members: Miedema, Sape (graduation committee), Langelaar, Matthijs (graduation committee), Helmons, Rudy (graduation committee), Kromwijk, PJ (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Optimization; Topology optimization; Shape optimization; Motion compensated gangway; Structural Optimization; Optistruct; Hyperworks; Size optimization; Design methodology

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APA (6^th Edition):

Vergeer, M. (. (2018). Structural topology optimization of an active motion compensated gangway. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ab92c1fb-a5b1-4302-b2b4-fcd36b84f0dc

Chicago Manual of Style (16^th Edition):

Vergeer, Michael (author). “Structural topology optimization of an active motion compensated gangway.” 2018. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:ab92c1fb-a5b1-4302-b2b4-fcd36b84f0dc.

MLA Handbook (7^th Edition):

Vergeer, Michael (author). “Structural topology optimization of an active motion compensated gangway.” 2018. Web. 08 Mar 2021.

Vancouver:

Vergeer M(. Structural topology optimization of an active motion compensated gangway. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:ab92c1fb-a5b1-4302-b2b4-fcd36b84f0dc.

Council of Science Editors:

Vergeer M(. Structural topology optimization of an active motion compensated gangway. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:ab92c1fb-a5b1-4302-b2b4-fcd36b84f0dc

Georgia Tech

28. Ghosh, Sayan. Concurrent optimization using probabilistic analysis of distributed multidisciplinary architectures for design under uncertainty.

Degree: PhD, Aerospace Engineering, 2016, Georgia Tech

URL: http://hdl.handle.net/1853/56302

► Uncertainty based Multidisciplinary Optimization (UMDO) relies on propagation of uncertainties across several disciplines. A typical aircraft design process involves collaboration of multiple and diverse teams… (more)

▼ Uncertainty based Multidisciplinary Optimization (UMDO) relies on propagation of uncertainties across several disciplines. A typical aircraft design process involves collaboration of multiple and diverse teams involving high-fidelity disciplinary tools and experts. Therefore, traditional methods such as All-In-One (AIO), which integrates all the disciplines and treats the entire multidisciplinary analysis process as a black box becomes infeasible for uncertainty propagation and analysis. If all the disciplines cannot be tightly integrated, then it is helpful to use a method that conducts uncertainty propagation in each discipline and combines their results into a system level uncertainty. Distributed UMDO methods based on Collaborative Optimization (CO), Concurrent Subs-Space Optimization (CSSO), Analytical Target Cascading (ATC), Bi-Level Integrated System Synthesis (BLISS), etc. use the strategy of decomposition and coordination to carry out distributed uncertainty analysis and optimization by preserving disciplinary autonomy. However, there are shortcomings in these methods which leads to inaccurate quantification of uncertainty at system level. One such disadvantage is the inability to handle statistical dependencies among coupling variables. In most cases, the statistical dependencies manifests due the underlying functional relationship between the variables. Most of the existing distributed UMDO methods in literature assume that the coupling variables are independent of each other. Although, under certain conditions this assumption is valid, nonetheless it may lead to inaccurate estimation of uncertainty quantification at system level if the dependencies of coupling variables are significant and if the system level metric is sensitive to the dependencies. Another limitation in the existing distributed UMDO literature is related to interdisciplinary compatibility. One of the common strategies to achieve interdisciplinary compatibility is by moment matching method. Since, only marginal distributions of coupling variables are considered in the moment matching, it works well when coupling variables are statistically independent. However, when coupling variables are dependent, this strategy does not guarantee that interdisciplinary compatibility is satisfied for every instantiation of uncertain variables. Also, most of these methods assume that the uncertain coupling variables have fixed functional form of probability density function, most commonly a Gaussian density function. This assumption breaks down when the local uncertainties in disciplines are non-Gaussian and disciplines are non-linear functions of input variables which lead to non-Gaussian coupling variables. To overcome these limitations, Probabilistic Analysis of Distributed Multidisciplinary Architectures (PADMA) is developed. PADMA is a bi-level distributed uncertainty based multidisciplinary analysis (UMDA) method which allows each discipline to carry out uncertainty propagation independently and concurrently. It is a non-iterative method in which… Advisors/Committee Members: Mavris, Dimitri N. (advisor), Kennedy, Graeme J. (committee member), Vidakovic, Brani (committee member), Sankar, Lakshmi N. (committee member), Schrage, Daniel P. (committee member).

Subjects/Keywords: Uncertainty quantification; Multidisciplinary design optimization; MDO; Design optimization; Quantile regression; Copula; Statistical dependence; Design under uncertainty; Concurrent optimization

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APA (6^th Edition):

Ghosh, S. (2016). Concurrent optimization using probabilistic analysis of distributed multidisciplinary architectures for design under uncertainty. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/56302

Chicago Manual of Style (16^th Edition):

Ghosh, Sayan. “Concurrent optimization using probabilistic analysis of distributed multidisciplinary architectures for design under uncertainty.” 2016. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021. http://hdl.handle.net/1853/56302.

MLA Handbook (7^th Edition):

Ghosh, Sayan. “Concurrent optimization using probabilistic analysis of distributed multidisciplinary architectures for design under uncertainty.” 2016. Web. 08 Mar 2021.

Vancouver:

Ghosh S. Concurrent optimization using probabilistic analysis of distributed multidisciplinary architectures for design under uncertainty. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1853/56302.

Council of Science Editors:

Ghosh S. Concurrent optimization using probabilistic analysis of distributed multidisciplinary architectures for design under uncertainty. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/56302

University of Illinois – Urbana-Champaign

29. Guo, Daifeng. Algorithms for DFM in electronic design automation.

Degree: PhD, Electrical & Computer Engr, 2019, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/104852

► As the dimension of features in integrated circuits (IC) keeps shrinking to fulfill Moore’s law, the manufacturing process has no choice but confronting the limit… (more)

▼ As the dimension of features in integrated circuits (IC) keeps shrinking to fulfill Moore’s law, the manufacturing process has no choice but confronting the limit of physics at the expense of design flexibility. On the other hand, IC designs inevitably becomes more complex to meet the increasing demand of computational power. To close this gap, design for manufacturing (DFM) becomes the key to enable an easy and low-cost IC fabrication. Therefore, efficient electronic design automation (EDA) algorithms must be developed for DFM to address the design constraints and help the designers to better facilitate the manufacture process. As the core of manufacturing ICs, conventional lithography systems (193i) reach their limit for the 22 nm technology node and beyond. Consequently, several advanced lithography techniques are proposed, such as multiple patterning lithography (MPL), extreme ultra-violet lithography (EUV), electron beam (E-beam), and block copolymer directed self-assembly (DSA); however, DFM algorithms are essential for them to achieve better printability of a design. In this dissertation, we focus on analyzing the compatibility of designs and various advanced lithography techniques, and develop efficient algorithms to enable the manufacturing. We first explore E-Beam, one of the promising candidates for IC fabrication beyond the 10 nm technology node. To address its low throughput issue, the character projection technique has been proposed, and its stencil planning can be optimized with an awareness of overlapping characters. 2D stencil planning is proved NP-Hard. With the assumption of standard cells, the 2D problem can be partitioned into 1D row ordering subproblems; however, it is also considered hard, and no efficient optimal solution has been provided so far. We propose a polynomial time optimal algorithm to solve the 1D row ordering problem, which serves as the major subroutine for the entire stencil planning problem. Technical proofs and experimental results verify that our algorithm is efficient and indeed optimal. As the most popular and practical lithography technique, MPL utilizes multiple exposures to print a single layout and thus allows placement of features within the minimum distance. Therefore, a feasible decomposition of the layout is a must to adopt MPL, and it is usually formulated as a graph k-coloring problem, which is computationally difficult for k > 2. We study the k-colorability of rectangular and diagonal grid graphs as induced subgraphs of a rectangular or diagonal grid respectively, since it has direct applications in printing contact/via layouts. It remains an open question on how hard it is to color grid graphs due to their regularity and sparsity. In this dissertation, we conduct a complete analysis of the k-coloring problems on rectangular and diagonal grid graphs, and particularly the NP-completeness of 3-coloring on a diagonal grid graph is proved. In practice, we propose an exact 3-coloring algorithm for those graphs and conduct experiments to verify its performance and… Advisors/Committee Members: Wong, Martin D.F. (advisor), Wong, Martin D.F. (Committee Chair), Chen, Deming (committee member), Vasudevan, Shobha (committee member), Chiang, Charles (committee member).

Subjects/Keywords: Algorithm; Optimization; Design for Manufacturing; Electronic Design Automation; Computer-Aided Design

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APA (6^th Edition):

Guo, D. (2019). Algorithms for DFM in electronic design automation. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/104852

Chicago Manual of Style (16^th Edition):

Guo, Daifeng. “Algorithms for DFM in electronic design automation.” 2019. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed March 08, 2021. http://hdl.handle.net/2142/104852.

MLA Handbook (7^th Edition):

Guo, Daifeng. “Algorithms for DFM in electronic design automation.” 2019. Web. 08 Mar 2021.

Vancouver:

Guo D. Algorithms for DFM in electronic design automation. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2019. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/2142/104852.

Council of Science Editors:

Guo D. Algorithms for DFM in electronic design automation. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2019. Available from: http://hdl.handle.net/2142/104852

30. Joshi, Prachi. Design Space Exploration for Embedded Systems in Automotives.

Degree: PhD, Computer Engineering, 2018, Virginia Tech

URL: http://hdl.handle.net/10919/82839

► With ever increasing contents (safety, driver assistance, infotainment, etc.) in today's automotive systems that rely on electronics and software, the supporting architecture is integrated by… (more)

▼ With ever increasing contents (safety, driver assistance, infotainment, etc.) in today's automotive systems that rely on electronics and software, the supporting architecture is integrated by a complex set of heterogeneous data networks. A modern automobile contains up to 100 ECUs and several heterogeneous communication buses (such as CAN, FlexRay, etc.), exchanging thousands of signals. The automotive Original Equipment Manufacturers (OEMs) and suppliers face a number of challenges such as reliability, safety and cost to incorporate the growing functionalities in vehicles. Additionally, reliability, safety and cost are major concerns for the industry. One of the important challenges in automotive design is the efficient and reliable transmission of signals over communication networks such as CAN and CAN-FD. With the growing features in automotives, the OEMs already face the challenge of saturation of bus bandwidth hindering the reliability of communication and the inclusion of additional features. In this dissertation, we study the problem of optimization of bandwidth utilization (BU) over CAN-FD networks. Signals are transmitted over the CAN/CAN-FD bus in entities called frames. The signal-to-frame-packing has been studied in the literature and it is compared to the bin packing problem which is known to be NP-hard. By carefully optimizing signal-to-frame packing, the CAN-FD BU can be reduced. In Chapter 3, we propose a method for offset assignment to signals and show its importance in improving BU. One of our contributions for an industrial setting is a modest improvement in BU of about 2.3%. Even with this modest improvement, the architecture's lifetime could potentially be extended by several product cycles, which may translate to saving millions of dollars for the OEM. Therefore, the optimization of signal-to-frame packing in CAN-FD is the major focus of this dissertation. Another challenge addressed in this dissertation is the reliable mapping of a task model onto a given architecture, such that the end-to-end latency requirements are satisfied. This avoids costly redesign and redevelopment due to system design errors. Advisors/Committee Members: Zeng, Haibo (committeechair), Shukla, Sandeep K. (committee member), Ravi, Sekharipuram Subramaniam (committee member), Hsiao, Michael S. (committee member), Vullikanti, Anil Kumar S. (committee member), Yang, Yaling (committee member).

Subjects/Keywords: design space exploration; automotive design; real time system design; optimization

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APA (6^th Edition):

Joshi, P. (2018). Design Space Exploration for Embedded Systems in Automotives. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/82839

Chicago Manual of Style (16^th Edition):

Joshi, Prachi. “Design Space Exploration for Embedded Systems in Automotives.” 2018. Doctoral Dissertation, Virginia Tech. Accessed March 08, 2021. http://hdl.handle.net/10919/82839.

MLA Handbook (7^th Edition):

Joshi, Prachi. “Design Space Exploration for Embedded Systems in Automotives.” 2018. Web. 08 Mar 2021.

Vancouver:

Joshi P. Design Space Exploration for Embedded Systems in Automotives. [Internet] [Doctoral dissertation]. Virginia Tech; 2018. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10919/82839.

Council of Science Editors:

Joshi P. Design Space Exploration for Embedded Systems in Automotives. [Doctoral Dissertation]. Virginia Tech; 2018. Available from: http://hdl.handle.net/10919/82839

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