subject:(damping AND elastic properties of wood)

University of Canterbury

1. Hansen, Helge Johannes. Acoustic Studies on Wood.

Degree: School of Forestry, 2006, University of Canterbury

► Several acoustic techniques have been used to determine elastic and damping properties of trees, logs and beams. Time of flight (TOF) measurements in the outerwood… (more)

Subjects/Keywords: Acoustics; damping and elastic properties of wood; harmonics; (artificial) defects; pruning and thinning

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APA (6^th Edition):

Hansen, H. J. (2006). Acoustic Studies on Wood. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/1746

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):

Hansen, Helge Johannes. “Acoustic Studies on Wood.” 2006. Thesis, University of Canterbury. Accessed December 06, 2019. http://hdl.handle.net/10092/1746.

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

MLA Handbook (7^th Edition):

Hansen, Helge Johannes. “Acoustic Studies on Wood.” 2006. Web. 06 Dec 2019.

Vancouver:

Hansen HJ. Acoustic Studies on Wood. [Internet] [Thesis]. University of Canterbury; 2006. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10092/1746.

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

Council of Science Editors:

Hansen HJ. Acoustic Studies on Wood. [Thesis]. University of Canterbury; 2006. Available from: http://hdl.handle.net/10092/1746

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

Georgia Tech

2. Farzbod, Farhad. Analysis of Bloch formalism in undamped and damped periodic structures.

Degree: PhD, Mechanical Engineering, 2010, Georgia Tech

URL: http://hdl.handle.net/1853/42885

► Bloch analysis was originally developed by Felix Bloch to solve Schrödinger's equation for the electron wave function in a periodic potential field, such as that… (more)

Subjects/Keywords: Spatial frequency band gap; Bloch; Damping; Elastic wave propagation; Bloch constant; Damping (Mechanics)

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APA (6^th Edition):

Farzbod, F. (2010). Analysis of Bloch formalism in undamped and damped periodic structures. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42885

Chicago Manual of Style (16^th Edition):

Farzbod, Farhad. “Analysis of Bloch formalism in undamped and damped periodic structures.” 2010. Doctoral Dissertation, Georgia Tech. Accessed December 06, 2019. http://hdl.handle.net/1853/42885.

MLA Handbook (7^th Edition):

Farzbod, Farhad. “Analysis of Bloch formalism in undamped and damped periodic structures.” 2010. Web. 06 Dec 2019.

Vancouver:

Farzbod F. Analysis of Bloch formalism in undamped and damped periodic structures. [Internet] [Doctoral dissertation]. Georgia Tech; 2010. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/1853/42885.

Council of Science Editors:

Farzbod F. Analysis of Bloch formalism in undamped and damped periodic structures. [Doctoral Dissertation]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/42885

University of British Columbia

3. Young, Herbert David. Controllable, non-oscillatory damping for deformable objects .

Degree: 2007, University of British Columbia

URL: http://hdl.handle.net/2429/217

► This thesis presents a new method for the controllable damping of deformable objects. The method evolves from physically based techniques; however, it allows for non-physical,… (more)

Subjects/Keywords: damping; elastic; deformable; energy minimization

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APA (6^th Edition):

Young, H. D. (2007). Controllable, non-oscillatory damping for deformable objects . (Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/217

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):

Young, Herbert David. “Controllable, non-oscillatory damping for deformable objects .” 2007. Thesis, University of British Columbia. Accessed December 06, 2019. http://hdl.handle.net/2429/217.

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

MLA Handbook (7^th Edition):

Young, Herbert David. “Controllable, non-oscillatory damping for deformable objects .” 2007. Web. 06 Dec 2019.

Vancouver:

Young HD. Controllable, non-oscillatory damping for deformable objects . [Internet] [Thesis]. University of British Columbia; 2007. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2429/217.

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

Council of Science Editors:

Young HD. Controllable, non-oscillatory damping for deformable objects . [Thesis]. University of British Columbia; 2007. Available from: http://hdl.handle.net/2429/217

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

4. Poncet, Mélissa. Effet de l'incorporation de systèmes hybrides sur les propriétés mécaniques de matériaux composites à matrice époxyvinylester et polyester insaturé : Effect of the incorporation of hybrid systems on the mechanical properties of composite materials based on epoxy vinylester and unsaturated polyester matrices.

Degree: Docteur es, Sciences et génie des matériaux, 2013, Paris, ENMP

URL: http://www.theses.fr/2013ENMP0025

►

Ce travail de thèse porte sur l'élaboration d'un matériau composite à matrice thermodurcissable incorporant des renforts nanométriques et/ou une phase élastomère, permettant d'améliorersa rigidité, son… (more)

▼

Ce travail de thèse porte sur l'élaboration d'un matériau composite à matrice thermodurcissable incorporant des renforts nanométriques et/ou une phase élastomère, permettant d'améliorersa rigidité, son amortissement et sa résilience. Pour cela, nous avons réalisé des formulations baséessur des matrices époxyvinylester, renforcées ou non par une phase élastomère et chargées de montmorillonite ou de sépiolite. Nous avons étudié leurs propriétés visco-élastiques par analyse modaleexpérimentale et leurs propriétés à l'impact par des essais d'impact par chute de masse. Nous avonsdéterminé la microstructure des composites fabriqués en nous appuyant sur la diffraction des rayonsX et des observations en microscopie électronique. Des modèles d'homogénéisation, fondés sur lemodèle de H ALPIN -T SAI et adaptés aux matériaux composites étudiés, ont été développés afin dedisposer d'un outil permettant de relier explicitement la rigidité des composites à leur morphologie.Une analyse paramétrique approfondie a permis de déterminer les caractères morphologiques lesplus influents et d'évaluer la performance des procédés de mise en œuvre au regard des renforcements mécaniques obtenus. Expérimentalement, l'incorporation de montmorillonite ou de sépiolite a conduit à une augmentation significative du module élastique et la présence d'une phase élastomère dans la résine a permis de doubler l'amortissement et d'augmenter la résilience. Finalement, les formulations les plus performantes ont été retenues pour la fabrication de composites renforcés de fibres de verre. L'amélioration des propriétés mécaniques se retrouve, dans une moindre mesure, dans lesprototypes réalisés. La pertinence de l'utilisation de ces matériaux à l'échelle industrielle a été évaluée.

This thesis focuses on the development of a thermosetting matrix composite incorporating nanoscale reinforcements and/or an elatomeric phase to improve its stiffness, damping and resilience.To do so, we made formulations based on epoxy vinyl ester matrices, filled or not by an elastomeric phase, and reinforced with montmorillonite or sepiolite. Their viscoelastic properties were studied usingexperimental modal analysis and their impact properties were investigated using drop weight impacttesting. The microstructure of these composites was examined using X-ray diffraction and electronmicroscopy observations.Homogenization models based on H ALPIN -T SAI model and adapted to the studied composites were developed to provide a tool able to explicitly link the stiffness of the material to its morphology.A detailed parametric analysis allowed to determine the most influential morphological characteristics and to assess the efficiency of the process regarding the mechanical stiffening obtained.Experimentally, the incorporation of montmorillonite or sepiolite led to a significant increase in the elastic modulus and, with the presence of an elastomeric phase in the resin, the damping was doubled and the resilience was increased.Finally, the most efficient formulations were used to manufacture…

Advisors/Committee Members: Lopez-Cuesta, José-Marie (thesis director), Haudin, Jean-Marc (thesis director).

Subjects/Keywords: Module élastique; Amortissement; Résilience; Modèles d'homogénéisation; Analyse modale expérimentale; Montmorillonite; Elastic Modulus; Damping; Resilience; Homogenization models; Experimental modal analysis; Montmorillonite

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APA (6^th Edition):

Poncet, M. (2013). Effet de l'incorporation de systèmes hybrides sur les propriétés mécaniques de matériaux composites à matrice époxyvinylester et polyester insaturé : Effect of the incorporation of hybrid systems on the mechanical properties of composite materials based on epoxy vinylester and unsaturated polyester matrices. (Doctoral Dissertation). Paris, ENMP. Retrieved from http://www.theses.fr/2013ENMP0025

Chicago Manual of Style (16^th Edition):

Poncet, Mélissa. “Effet de l'incorporation de systèmes hybrides sur les propriétés mécaniques de matériaux composites à matrice époxyvinylester et polyester insaturé : Effect of the incorporation of hybrid systems on the mechanical properties of composite materials based on epoxy vinylester and unsaturated polyester matrices.” 2013. Doctoral Dissertation, Paris, ENMP. Accessed December 06, 2019. http://www.theses.fr/2013ENMP0025.

MLA Handbook (7^th Edition):

Poncet, Mélissa. “Effet de l'incorporation de systèmes hybrides sur les propriétés mécaniques de matériaux composites à matrice époxyvinylester et polyester insaturé : Effect of the incorporation of hybrid systems on the mechanical properties of composite materials based on epoxy vinylester and unsaturated polyester matrices.” 2013. Web. 06 Dec 2019.

Vancouver:

Poncet M. Effet de l'incorporation de systèmes hybrides sur les propriétés mécaniques de matériaux composites à matrice époxyvinylester et polyester insaturé : Effect of the incorporation of hybrid systems on the mechanical properties of composite materials based on epoxy vinylester and unsaturated polyester matrices. [Internet] [Doctoral dissertation]. Paris, ENMP; 2013. [cited 2019 Dec 06]. Available from: http://www.theses.fr/2013ENMP0025.

Council of Science Editors:

Poncet M. Effet de l'incorporation de systèmes hybrides sur les propriétés mécaniques de matériaux composites à matrice époxyvinylester et polyester insaturé : Effect of the incorporation of hybrid systems on the mechanical properties of composite materials based on epoxy vinylester and unsaturated polyester matrices. [Doctoral Dissertation]. Paris, ENMP; 2013. Available from: http://www.theses.fr/2013ENMP0025

University of Colorado

5. Kathiria, Rushi Keshav. In-Situ Measurements of the Elastic Modulus of Zirconia Polycrystals Held in a State of Flash Induced by an Electric Field.

Degree: MS, 2018, University of Colorado

URL: https://scholar.colorado.edu/mcen_gradetds/188

► A recently discovered sintering mechanism called flash sintering where densification of a green ceramic compact happens in seconds rather than hours is the interest… (more)

Subjects/Keywords: damping; elastic modulus; finite element analysis; flash sintering; in-situ measurement; zirconia; Materials Science and Engineering; Mechanical Engineering

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APA (6^th Edition):

Kathiria, R. K. (2018). In-Situ Measurements of the Elastic Modulus of Zirconia Polycrystals Held in a State of Flash Induced by an Electric Field. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/mcen_gradetds/188

Chicago Manual of Style (16^th Edition):

Kathiria, Rushi Keshav. “In-Situ Measurements of the Elastic Modulus of Zirconia Polycrystals Held in a State of Flash Induced by an Electric Field.” 2018. Masters Thesis, University of Colorado. Accessed December 06, 2019. https://scholar.colorado.edu/mcen_gradetds/188.

MLA Handbook (7^th Edition):

Kathiria, Rushi Keshav. “In-Situ Measurements of the Elastic Modulus of Zirconia Polycrystals Held in a State of Flash Induced by an Electric Field.” 2018. Web. 06 Dec 2019.

Vancouver:

Kathiria RK. In-Situ Measurements of the Elastic Modulus of Zirconia Polycrystals Held in a State of Flash Induced by an Electric Field. [Internet] [Masters thesis]. University of Colorado; 2018. [cited 2019 Dec 06]. Available from: https://scholar.colorado.edu/mcen_gradetds/188.

Council of Science Editors:

Kathiria RK. In-Situ Measurements of the Elastic Modulus of Zirconia Polycrystals Held in a State of Flash Induced by an Electric Field. [Masters Thesis]. University of Colorado; 2018. Available from: https://scholar.colorado.edu/mcen_gradetds/188

6. Olsson, Daniel. Numerical simulations of energy absorbing boundaries for elastic wave propagation in thick concrete structures subjected to impact loading.

Degree: Physics, 2012, Umeå University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58015

► As many of the world’s nuclear power plants are near the end of their supposed life span a need arise to assess the components… (more)

▼ As many of the world’s nuclear power plants are near the end of their supposed life span a need arise to assess the components crucial to the safety of these plants. One of these crucial components is the concrete reactor confinement; to assess its condition, non-destructive testing (NDT) is an attractive method. Traditional testing of concrete structures has comprised of drilling out a sample and performing stress tests on it, but because of the radioactive environment inside the containment this method is far from ideal. NDT is of course possible to use at any structure but at reactor containments the benefits from not creating holes in the structure are prominent; NDT is also an attractive option from an esthetical point of view because it leaves the structure intact. The NDT method pertaining to this study is the impact echo method which comprise of applying a force on the structure, usually a hammer blow, and measuring the response with a receiver. The impact will excite waves propagating in the structure which gives rise to Lamb modes. Lamb modes are structural oscillations of the wall and it is the frequency of these modes that are used to determine the thickness of the wall. The elastic properties of the structure can in turn be obtained by measuring the velocities of the waves propagation. It is also possible to use the impact echo method to detect irregularities in the structure such as cracks or delamination. To simulate the dynamics of a system using NDT numerical methods such as finite element modeling (FEM) is often used. The purpose of this study is to assess the possibility to utilize absorbing layers using increasing damping (ALID) in models to reduce the computational time of FEM analyses. ALIDs are used at the edges to simulate an infinite system and are thus supposed to cancel out incoming waves to prevent unwanted reflection from the edges. The models in this study have all pertained to two dimensional plates utilizing infinitesimal strain theory; the decrease in computational time is significant when using ALIDs and for three dimensional models it would be even more so. The ALIDs are specified by length and maximum mass proportional Rayleigh damping (C_Mmax), in this study three different lengths are tested, 0.5, 1.5 and 4.5 m for C_Mmax ranging from 10³ to 2*10⁵ Ns/m. The damping is increased with increasing distance into the ALID with specified maximum value at the back edge. However, it should be noted that the increase in damping causes difference in impedance between elements and if this difference is too large it will cause reflections of waves at the boundary between the elements. The ALID must thus be defined so that it sufficiently cancels out the wave without causing unwanted reflections due to impedance differences. The conclusion is that the 0.5 m long ALID does not provide good results for any choice of maximum mass proportional Rayleigh damping. Both the 1.5 and 4.5 m long ALIDs are, however, concluded to be…

Subjects/Keywords: Numerical simulations; elastic media; wave propagation; concrete; impact loading; energy absorbing boundaries; longitudinal; primary wave; secondary wave; shear; Rayleigh damping; Rayleigh wave

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Olsson, D. (2012). Numerical simulations of energy absorbing boundaries for elastic wave propagation in thick concrete structures subjected to impact loading. (Thesis). Umeå University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58015

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):

Olsson, Daniel. “Numerical simulations of energy absorbing boundaries for elastic wave propagation in thick concrete structures subjected to impact loading.” 2012. Thesis, Umeå University. Accessed December 06, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58015.

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

MLA Handbook (7^th Edition):

Olsson, Daniel. “Numerical simulations of energy absorbing boundaries for elastic wave propagation in thick concrete structures subjected to impact loading.” 2012. Web. 06 Dec 2019.

Vancouver:

Olsson D. Numerical simulations of energy absorbing boundaries for elastic wave propagation in thick concrete structures subjected to impact loading. [Internet] [Thesis]. Umeå University; 2012. [cited 2019 Dec 06]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58015.

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

Council of Science Editors:

Olsson D. Numerical simulations of energy absorbing boundaries for elastic wave propagation in thick concrete structures subjected to impact loading. [Thesis]. Umeå University; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58015

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

Brno University of Technology

7. Weiss, Andrej. Analýza odezvových veličin vzorků kostní tkáně v různém stavu demineralizace nebo deproteinizace .

Degree: 2015, Brno University of Technology

URL: http://hdl.handle.net/11012/39395

► Bakalárska práca sa zaoberá analýzou mechanických veličín vzoriek kortikálnej kosti v stave simulujúcom úbytok kolagénnej zložky tkaniva. Skúmaná je citlivosť zvolených veličín na deproteinizáciu. Problém… (more)

Subjects/Keywords: kortikálna kosť; deproteinizácia; experimentálne modelovanie; modul pružnosti; pomerný útlm; vlastná frekvencia; hustota; cortical bone; deproteinization; experimental modeling; elastic modulus; damping ratio; natural frequency; density

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APA (6^th Edition):

Weiss, A. (2015). Analýza odezvových veličin vzorků kostní tkáně v různém stavu demineralizace nebo deproteinizace . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/39395

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):

Weiss, Andrej. “Analýza odezvových veličin vzorků kostní tkáně v různém stavu demineralizace nebo deproteinizace .” 2015. Thesis, Brno University of Technology. Accessed December 06, 2019. http://hdl.handle.net/11012/39395.

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

MLA Handbook (7^th Edition):

Weiss, Andrej. “Analýza odezvových veličin vzorků kostní tkáně v různém stavu demineralizace nebo deproteinizace .” 2015. Web. 06 Dec 2019.

Vancouver:

Weiss A. Analýza odezvových veličin vzorků kostní tkáně v různém stavu demineralizace nebo deproteinizace . [Internet] [Thesis]. Brno University of Technology; 2015. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/11012/39395.

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

Council of Science Editors:

Weiss A. Analýza odezvových veličin vzorků kostní tkáně v různém stavu demineralizace nebo deproteinizace . [Thesis]. Brno University of Technology; 2015. Available from: http://hdl.handle.net/11012/39395

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

University of New South Wales

8. Wang, Yue-Cong. Modelling of damping in transient dynamic finite element analysis.

Degree: Engineering. Civil Engineering, 1993, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/64707 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:62759/SOURCE01?view=true

Subjects/Keywords: Finite element method; Damping Mechanics; Elastic waves; Soil dynamics; Thesis Digitisation Program

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, Y. (1993). Modelling of damping in transient dynamic finite element analysis. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/64707 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:62759/SOURCE01?view=true

Chicago Manual of Style (16^th Edition):

Wang, Yue-Cong. “Modelling of damping in transient dynamic finite element analysis.” 1993. Doctoral Dissertation, University of New South Wales. Accessed December 06, 2019. http://handle.unsw.edu.au/1959.4/64707 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:62759/SOURCE01?view=true.

MLA Handbook (7^th Edition):

Wang, Yue-Cong. “Modelling of damping in transient dynamic finite element analysis.” 1993. Web. 06 Dec 2019.

Vancouver:

Wang Y. Modelling of damping in transient dynamic finite element analysis. [Internet] [Doctoral dissertation]. University of New South Wales; 1993. [cited 2019 Dec 06]. Available from: http://handle.unsw.edu.au/1959.4/64707 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:62759/SOURCE01?view=true.

Council of Science Editors:

Wang Y. Modelling of damping in transient dynamic finite element analysis. [Doctoral Dissertation]. University of New South Wales; 1993. Available from: http://handle.unsw.edu.au/1959.4/64707 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:62759/SOURCE01?view=true

Brno University of Technology

9. Panko, Martin. Tlumení tlakových pulsací v pružných potrubích .

Degree: 2008, Brno University of Technology

URL: http://hdl.handle.net/11012/15973

► Tato diplomová práce se zabývá numerickým modelováním tlakových pulsací v pružných potrubích. V práci je odvozena rovnice kontinuity tekutiny v pružné trubici s uvažováním tlumení… (more)

Subjects/Keywords: FTCS; Lax-Friedrichs; Lax-Wendroff; pulsace; tlak; pružné potrubí; tlumení; rovnice kontinuity; Voigtův (Kelvinův) model; rychlost zvuku; materiálové konstanty; FTCS; Lax- Friedrichs; Lax-Wendroff; pulsation; pressure; elastic pipe; damping; continuity relation; Voigt (Kelvin) model; speed of sound; elastic constants

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APA (6^th Edition):

Panko, M. (2008). Tlumení tlakových pulsací v pružných potrubích . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/15973

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):

Panko, Martin. “Tlumení tlakových pulsací v pružných potrubích .” 2008. Thesis, Brno University of Technology. Accessed December 06, 2019. http://hdl.handle.net/11012/15973.

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

MLA Handbook (7^th Edition):

Panko, Martin. “Tlumení tlakových pulsací v pružných potrubích .” 2008. Web. 06 Dec 2019.

Vancouver:

Panko M. Tlumení tlakových pulsací v pružných potrubích . [Internet] [Thesis]. Brno University of Technology; 2008. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/11012/15973.

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

Council of Science Editors:

Panko M. Tlumení tlakových pulsací v pružných potrubích . [Thesis]. Brno University of Technology; 2008. Available from: http://hdl.handle.net/11012/15973

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

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

10. Καλλιόγλου, Πολυξένη. Μελέτη των δυναμικών ιδιοτήτων εδαφών στη συσκευή στήλης-συντονισμού.

Degree: 2003, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/15174

► The purpose of the work presented in this thesis is the investigation of dynamic properties of natural soils from Greece and Cyprus in the resonant-column… (more)

▼ The purpose of the work presented in this thesis is the investigation of dynamic properties of natural soils from Greece and Cyprus in the resonant-column aparratus. Specifically, the shear modulus, G, and shear damping ratio, DT, of inorganic and organic, as well as compacted soils, were determined and the effect of various parameters, such as effective isotropic stress, shear strain, plasticity, soil composition and structure, on the above properties was studied. The availability of a relative large number of data for natural soils allowed the establishment of empirical correlations between dynamic and physical properties, allowing thus the establishment of a database. In particular, such correlationships were established for the small-strain shear modulus, Gmax, the damping ratio, DTmin, the variation of shear modulus, G, and damping ratio, DT, with shear strain, and excess pore water pressure development, Δu, during dynamic loading. The most important parameters affecting shear modulus, G, and damping ratio, DT, are shear strain, γ, void ratio, e, effective isotropic stress, σ΄ο, soil composition and structure. The following general form equation can be used to describe shear modulus, G. ()()()()ofefAGσγγ?••= (1) At small strains (10-7-10-6), equation (1) takes the following form for inorganic non-cohesive soils. ()2max2.171onooeGAeσ??=••+ (2) where parameters Αο and nο depend on grain size distribution, shape, size, angularity and mineral composition of soil grains, fines content, gravels, calcareous content e.t.c.. Moreover, for sands containing fines the granular void ratio, eg, was found to describe better the effect of void ratio and fines content on Gmax. For cohesive soils (inorganic-organic-compacted), the following relationship for Gmax is proposed. 0.546max1.0982900oGeσ?=• (3) where Gmax and σ΄ο are in kPa. Low values of DΤmin (0.3-4.8 %) were determined for all soils tested with void ratio higher than 0.5, exept of an undisturbed sand with layered structure that gave much higher values of DΤmin (3.3%-8.5%). The lower limit of DΤmin values was determined for inorganic clean sands, while higher values were calculated for sands with fines or/and calcareous content, cohesive soils as well as organic soils. The range of DΤmin values becomes wider (1.15-9.8 %) for soils with void ratio less than 0.5, and the higher values (DΤmin>5%) are for inorganic cohesive soils, which also contained gravels or/and concretions, as well as compacted soils with plasticity index higher than 10%. An effect of σ΄ο on G and DT values, which depends on strain level, is observed for all three soil categories tested (inorganic, organic and cohesive). The effect of σ΄ο on Gmax is given in equations (2) and (3), while is negligible on DTmin. In the non-linear shear strains zone, G/Gmax-γ and DT-γ curves varry with σ΄ο for all non-cohesive soils, as well as low-plasticity soils and peats with layered structure, at stresses smaller than in-situ mean effective stress. In particular, G/Gmax decreases and DT increases at a given shear…

Subjects/Keywords: Συσκευή στήλης-συντονισμού; Δυναμικές ιδιότητες; Μέτρο διάτμησης; Λόγος στρεπτικής απόσβεσης; Διατμητική παραμόρφωση; Οριακή ελαστική παραμόρφωση; Οριακή παραμόρφωση μεταβολής όγκου; Ανόργανα εδάφη; Οργανικά εδάφη; Συμπυκνωμένα εδάφη; Resonant column-apparatus; Dynamic properties; Shear modulus; Shear damping ratio; Shear strain; Elastic threshold strain; Volumetric threshold strain; Inorganic soils; Organic soils; Compacted soils

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APA (6^th Edition):

Καλλιόγλου, . �. (2003). Μελέτη των δυναμικών ιδιοτήτων εδαφών στη συσκευή στήλης-συντονισμού. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/15174

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):

Καλλιόγλου, Πολυξένη. “Μελέτη των δυναμικών ιδιοτήτων εδαφών στη συσκευή στήλης-συντονισμού.” 2003. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed December 06, 2019. http://hdl.handle.net/10442/hedi/15174.

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

MLA Handbook (7^th Edition):

Καλλιόγλου, Πολυξένη. “Μελέτη των δυναμικών ιδιοτήτων εδαφών στη συσκευή στήλης-συντονισμού.” 2003. Web. 06 Dec 2019.

Vancouver:

Καλλιόγλου �. Μελέτη των δυναμικών ιδιοτήτων εδαφών στη συσκευή στήλης-συντονισμού. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2003. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10442/hedi/15174.

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

Council of Science Editors:

Καλλιόγλου �. Μελέτη των δυναμικών ιδιοτήτων εδαφών στη συσκευή στήλης-συντονισμού. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2003. Available from: http://hdl.handle.net/10442/hedi/15174

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

11. muho, edmond. Αντισεισμικός σχεδιασμός επίπεδων κατασκευών οπλισμένου σκυροδέματος με ιδιομορφικούς συντελεστές συμπεριφοράς και διάφορες στάθμες επιτελεστικότητας.

Degree: 2017, University of Patras; Πανεπιστήμιο Πατρών

URL: http://hdl.handle.net/10442/hedi/40278

► In this Ph.D Thesis a performance-based seismic design method, for plane reinforced concrete (R/C) moment-resisting frames (MRF), MRF with Infills and dual system with rectangular… (more)

▼ In this Ph.D Thesis a performance-based seismic design method, for plane reinforced concrete (R/C) moment-resisting frames (MRF), MRF with Infills and dual system with rectangular Walls, is proposed. The method is a force-based seismic design one utilizing not a single strength reduction factor as all modern codes do, but different such factors for each of the first significant modes of the frame. These modal strength reduction factors incorporate dynamic characteristics of the structure, different performance targets and different soil types. Thus, the proposed method can automatically satisfy deformation demands at all performance levels without requiring deformation checks at the end of the design process, as it is the case with code-based design methods.Empirical expressions for those modal strength reduction factors as functions of period, deformation/damage and soil types, which can be used directly in conjunction with the conventional elastic pseudo-acceleration design spectra with 5% damping for seismic design of R/C MRFs, are provided. These expressions have been obtained through extensive parametric studies involving nonlinear dynamic analyses of 76 frames under 100 seismic motions. The method is illustrated by numerical examples (at the end of this abstract and at the Chapter 9 which demonstrate its advantages over code-based seismic design methods.Modern seismic codes like Eurocode 8 employ linear elastic response spectrum analysis in conjunction with the strength reduction (R) or behaviour factor (q), which takes into account in a very approximate manner (just constant values depending on structural type) the inelastic behaviour of the structure. Checking of the deformation is done at the end of the design process and usually leads to heavier sections for the structure than those originally selected for satisfaction of strength requirements. This approach of seismic design is known as force-based design (FBD) because seismic forces are the main parameters.Damage and deformation of a structure are closely linked. Thus, by controlling deformation during the design process, one controls damage. This is the main idea of the displacement-based design (DBD), which employs displacements as the main parameters and thus controls deformation and hence damage directly.During the last 15 years or so, a new seismic design philosophy emerged, the performance-based design (PBD) one, which considers three or four design levels, each one corresponding to a specific seismic intensity and specific performance requirements in terms of deformation and/or damage.Part 3 of EC8 adopts a fully performance-based approach for existing buildings by defining three performance levels in terms of chord rotation values of the members. Thus, this approach could be used for performance-based design of R/C structures.Two main weaknesses are found in the behavior factor value provided in all modern codes: The first is that it is not linked to the dynamic characteristics of the structure. The second one is that it cannot control…

Subjects/Keywords: Αντισεισμικός σχεδιασμός; Κατασκευές οπλισμένου σκυροδέματος; Ιδιομορφικοί συντελεστές συμπεριφοράς; στάθμες επιτελεστικότητας; μέθοδος των δυνάμεων; ισοδύναμη γραμμικοποίηση; Ισοδύναμη απόσβεση; λόγοι ισοδύναμης ιξώδους ιδιομορφικής απόσβεσης; σχεδιασμός κατασκευών οπλισμένου σκυροδέματος; προσομοίωση κατασκευών οπλισμένου σκυροδέματος; τοιχοπληρώσεις; δυαδικά συστήματα πλαισίων-τοιχωμάτων; καμπτικά πλαίσια; Seismic design; Modal strength reduction factors; Behaviour factor; performance-based seismic design; moment-resisting frames; Masonry infills; dual system with rectangular Walls; performance levels; equivalent modal damping ratios; Transfer function; reinforced concrete modeling for nonlinear analysis; modeling stiffness of r/c; effective elastic stiffness of r/c; Strength and stiffness degradation; Reinforced concrete structures; equivalent linearization

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

muho, e. (2017). Αντισεισμικός σχεδιασμός επίπεδων κατασκευών οπλισμένου σκυροδέματος με ιδιομορφικούς συντελεστές συμπεριφοράς και διάφορες στάθμες επιτελεστικότητας. (Thesis). University of Patras; Πανεπιστήμιο Πατρών. Retrieved from http://hdl.handle.net/10442/hedi/40278

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):

muho, edmond. “Αντισεισμικός σχεδιασμός επίπεδων κατασκευών οπλισμένου σκυροδέματος με ιδιομορφικούς συντελεστές συμπεριφοράς και διάφορες στάθμες επιτελεστικότητας.” 2017. Thesis, University of Patras; Πανεπιστήμιο Πατρών. Accessed December 06, 2019. http://hdl.handle.net/10442/hedi/40278.

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

MLA Handbook (7^th Edition):

muho, edmond. “Αντισεισμικός σχεδιασμός επίπεδων κατασκευών οπλισμένου σκυροδέματος με ιδιομορφικούς συντελεστές συμπεριφοράς και διάφορες στάθμες επιτελεστικότητας.” 2017. Web. 06 Dec 2019.

Vancouver:

muho e. Αντισεισμικός σχεδιασμός επίπεδων κατασκευών οπλισμένου σκυροδέματος με ιδιομορφικούς συντελεστές συμπεριφοράς και διάφορες στάθμες επιτελεστικότητας. [Internet] [Thesis]. University of Patras; Πανεπιστήμιο Πατρών; 2017. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10442/hedi/40278.

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

Council of Science Editors:

muho e. Αντισεισμικός σχεδιασμός επίπεδων κατασκευών οπλισμένου σκυροδέματος με ιδιομορφικούς συντελεστές συμπεριφοράς και διάφορες στάθμες επιτελεστικότητας. [Thesis]. University of Patras; Πανεπιστήμιο Πατρών; 2017. Available from: http://hdl.handle.net/10442/hedi/40278

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

University of Florida

12. Babcock, Judson T. Aeroservoelastic Design for Closed-Loop Flight Dynamics of a MAV.

Degree: PhD, Aerospace Engineering - Mechanical and Aerospace Engineering, 2013, University of Florida

URL: http://ufdc.ufl.edu/UFE0045699

► Some fixed-wing micro air vehicles (MAVs) have high levels of structural flexibility, a property which can change the flight dynamics and control characteristics of the… (more)

▼ Some fixed-wing micro air vehicles (MAVs) have high levels of structural flexibility, a property which can change the flight dynamics and control characteristics of the vehicle. However, the exact level of flexibility is typically the result of a trial-and-error approach instead of being part of a rigorous design framework and may result in unknown aeroelastic effects on the flight dynamics. The current research investigates the nature of these aeroservoelastic effects by using a generic MAV configuration. The main parameter of interest is the stiffness of the wing. Bending and torsional stiffness of the wing are independently varied from 1.0 to 0.07 Newton meters squared while the trim conditions, flight dynamics, and structural dynamics are analyzed. Large changes in both the frequencies and damping ratios of the oscillatory flight modes are seen. The bending stiffness mainly affects the lateral-directional flight modes through an increase in the effective dihedral angle due to increased wing tip deflection. The direction and magnitude of the effect varies greatly between modes. Non-traditional mode shapes resulting from decreased bending stiffness are observed in the dutch roll mode and phugoid mode. The effects of torsional stiffness depend on the relative positioning of the elastic axis and center of pressure. When the elastic axis is near the center of pressure, changing torsional stiffness has only minor effects on the flight dynamics. Elastic axis locations which are further away from the center of pressure result in stronger effects from changes in torsional stiffness. In general, the torsional stiffness affects the longitudinal modes more than the lateral directional modes because of the changing angle of attack and pitching moment. Aeroservoelastic effects of wing stiffness on the tracking performance of the aircraft are investigated. For an LQR controller with fixed weightings, the tracking performance decreases as stiffness decreases. Changes in the phugoid mode damping and shape at low bending stiffness are found to have a very strong effect on the longitudinal tracking performance. The possibility of virtually changing the stiffness of the wing by using a model-following control scheme is investigated. It is observed that the stiff aircraft can approximate the response of the flexible but the flexible aircraft is unable to adequately approximate the performance of the stiff aircraft. An important consideration for micro air vehicles is their response to a wind gust. A frequency-domain approach is used to evaluate the aircraft's longitudinal gust response in the presence of aeroservoelastic effects. The level of wing bending stiffness is found to have an important effect on the gust sensitivity and gust rejection properties of the aircraft. The direction and frequency of the gust can drastically change the gust sensitivity of the aircraft. Lowering wing stiffness can reduce the gust sensitivity at low gust frequencies but can increase it at high frequencies. Changes in modal damping and shape due to… Advisors/Committee Members: Lind Jr, Richard C (committee chair), Ifju, Peter G (committee member), Ukeiley, Lawrence S (committee member), Bloomquist, David G (committee member).

Subjects/Keywords: Aircraft; Aircraft roll; Aircraft wings; Bending; Damping; Flight dynamics; Gusts; Natural frequencies; Stiffness; Structural deflection; aeroelastic – aeroelasticity – aeroservoelasticity – aswing – closed-loop – elastic-axis – flight-control – flight-dynamics – gust – lqr – micro-air-vehicle – stiffness

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APA (6^th Edition):

Babcock, J. T. (2013). Aeroservoelastic Design for Closed-Loop Flight Dynamics of a MAV. (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0045699

Chicago Manual of Style (16^th Edition):

Babcock, Judson T. “Aeroservoelastic Design for Closed-Loop Flight Dynamics of a MAV.” 2013. Doctoral Dissertation, University of Florida. Accessed December 06, 2019. http://ufdc.ufl.edu/UFE0045699.

MLA Handbook (7^th Edition):

Babcock, Judson T. “Aeroservoelastic Design for Closed-Loop Flight Dynamics of a MAV.” 2013. Web. 06 Dec 2019.

Vancouver:

Babcock JT. Aeroservoelastic Design for Closed-Loop Flight Dynamics of a MAV. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2019 Dec 06]. Available from: http://ufdc.ufl.edu/UFE0045699.

Council of Science Editors:

Babcock JT. Aeroservoelastic Design for Closed-Loop Flight Dynamics of a MAV. [Doctoral Dissertation]. University of Florida; 2013. Available from: http://ufdc.ufl.edu/UFE0045699

Osaka University

13. Xiao, Fei; 肖, 飛. Anomalous elastic behavior in Fe-Pd alloys exhibiting a second-order-like FCC-FCT martensitic transformation : ２次に近いFCC-FCT変態を示すFe-Pd合金における特異な弾性挙動; ニジ　二　チカイ　FCC-FCT　ヘンタイ　ヲ　シメス　Fe-Pd　ゴウキン　ニ　オケル　トクイナ　ダンセイ　キョドウ.

Degree: 博士（工学）, 2013, Osaka University

URL: http://hdl.handle.net/11094/27562

博士（工学）

2013-03-25

大阪大学

14401甲第16416号

26202

Subjects/Keywords: Iron-palladium alloy; Martensitic transformation; Elastic deformation; Plastic deformation; Critical point; Elastocaloric effect; Damping

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Xiao, Fei; 肖, �. (2013). Anomalous elastic behavior in Fe-Pd alloys exhibiting a second-order-like FCC-FCT martensitic transformation : ２次に近いFCC-FCT変態を示すFe-Pd合金における特異な弾性挙動; ニジ　二　チカイ　FCC-FCT　ヘンタイ　ヲ　シメス　Fe-Pd　ゴウキン　ニ　オケル　トクイナ　ダンセイ　キョドウ. (Thesis). Osaka University. Retrieved from http://hdl.handle.net/11094/27562

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):

Xiao, Fei; 肖, 飛. “Anomalous elastic behavior in Fe-Pd alloys exhibiting a second-order-like FCC-FCT martensitic transformation : ２次に近いFCC-FCT変態を示すFe-Pd合金における特異な弾性挙動; ニジ　二　チカイ　FCC-FCT　ヘンタイ　ヲ　シメス　Fe-Pd　ゴウキン　ニ　オケル　トクイナ　ダンセイ　キョドウ.” 2013. Thesis, Osaka University. Accessed December 06, 2019. http://hdl.handle.net/11094/27562.

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

MLA Handbook (7^th Edition):

Xiao, Fei; 肖, 飛. “Anomalous elastic behavior in Fe-Pd alloys exhibiting a second-order-like FCC-FCT martensitic transformation : ２次に近いFCC-FCT変態を示すFe-Pd合金における特異な弾性挙動; ニジ　二　チカイ　FCC-FCT　ヘンタイ　ヲ　シメス　Fe-Pd　ゴウキン　ニ　オケル　トクイナ　ダンセイ　キョドウ.” 2013. Web. 06 Dec 2019.

Vancouver:

Xiao, Fei; 肖 �. Anomalous elastic behavior in Fe-Pd alloys exhibiting a second-order-like FCC-FCT martensitic transformation : ２次に近いFCC-FCT変態を示すFe-Pd合金における特異な弾性挙動; ニジ　二　チカイ　FCC-FCT　ヘンタイ　ヲ　シメス　Fe-Pd　ゴウキン　ニ　オケル　トクイナ　ダンセイ　キョドウ. [Internet] [Thesis]. Osaka University; 2013. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/11094/27562.

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

Council of Science Editors:

Xiao, Fei; 肖 �. Anomalous elastic behavior in Fe-Pd alloys exhibiting a second-order-like FCC-FCT martensitic transformation : ２次に近いFCC-FCT変態を示すFe-Pd合金における特異な弾性挙動; ニジ　二　チカイ　FCC-FCT　ヘンタイ　ヲ　シメス　Fe-Pd　ゴウキン　ニ　オケル　トクイナ　ダンセイ　キョドウ. [Thesis]. Osaka University; 2013. Available from: http://hdl.handle.net/11094/27562

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

Queensland University of Technology

14. De Silva, Sandun S. Vibration characteristics of steel-deck composite floor systems under human excitation.

Degree: 2007, Queensland University of Technology

URL: https://eprints.qut.edu.au/16538/

► Steel-deck composite floor systems are being increasingly used in high-rise building construction, especially in Australia, as they are economical and easy to construct. These composite… (more)

▼ Steel-deck composite floor systems are being increasingly used in high-rise building construction, especially in Australia, as they are economical and easy to construct. These composite floor systems use high strength materials to achieve longer spans and are thus slender. As a result, they are vulnerable to vibration induced under service loads. These floors are normally designed using static methods which will not reveal the true behaviour and miss the dynamic amplifications resulting in inappropriate designs, which ultimately cause vibration and discomfort to occupants. At present there is no adequate design guidance to address the vibration in these composite floors, due to a lack of research information, resulting in wasteful post event retrofits. To address this gap in knowledge, a comprehensive research project is presented in this thesis, which investigated the dynamic performance of composite floors under various human induced loads. A popular type of composite floor system was selected for this investigation and subjected to load models representing different human activities. These load models have variable parameters such as load intensity, activity type (contact ratio), activity frequency and damping and are applied as pattern loads to capture the maximum responses in terms of deflections and accelerations. Computer models calibrated against experimental results are used in the analysis to generate the required information. The dynamic responses of deflections and accelerations are compared with the serviceability deflection limits and human comfort levels (of accelerations) to assess these floor types. This thesis also treats the use of visco-elastic (VE) dampers to mitigate excessive vibrations in steel-deck composite floors. VE damper properties have been presented and their performances in reducing the excessive vibrations have been assessed this thesis. The results identified possible occupancies under different loading conditions that can be used in planning, design and evaluation. The findings can also be used to plan retrofitting measures in problematic floor systems.

Subjects/Keywords: floor vibration; human perceptibility; finite element modelling; composite floors; human-induced loads; pattern loading; damping; dynamic amplifications; accelerations; visco-elastic dampers

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

De Silva, S. S. (2007). Vibration characteristics of steel-deck composite floor systems under human excitation. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/16538/

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):

De Silva, Sandun S. “Vibration characteristics of steel-deck composite floor systems under human excitation.” 2007. Thesis, Queensland University of Technology. Accessed December 06, 2019. https://eprints.qut.edu.au/16538/.

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

MLA Handbook (7^th Edition):

De Silva, Sandun S. “Vibration characteristics of steel-deck composite floor systems under human excitation.” 2007. Web. 06 Dec 2019.

Vancouver:

De Silva SS. Vibration characteristics of steel-deck composite floor systems under human excitation. [Internet] [Thesis]. Queensland University of Technology; 2007. [cited 2019 Dec 06]. Available from: https://eprints.qut.edu.au/16538/.

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

Council of Science Editors:

De Silva SS. Vibration characteristics of steel-deck composite floor systems under human excitation. [Thesis]. Queensland University of Technology; 2007. Available from: https://eprints.qut.edu.au/16538/

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

University of Florida

15. Balachandran, Vinayagamoorthy, 1952-. Inelastic analysis of frame structures including member and joint shears.

Degree: 1984, University of Florida

URL: http://ufdc.ufl.edu/AA00022726

Subjects/Keywords: Damping; Deformation; Economic inelasticity; Linear programming; Matrices; Modeling; Shear stress; Stiffness; Stiffness matrix; Subroutines; Civil Engineering thesis Ph. D; Elastic analysis (Engineering); Structural frames

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Balachandran, Vinayagamoorthy, 1. (1984). Inelastic analysis of frame structures including member and joint shears. (Thesis). University of Florida. Retrieved from http://ufdc.ufl.edu/AA00022726

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):

Balachandran, Vinayagamoorthy, 1952-. “Inelastic analysis of frame structures including member and joint shears.” 1984. Thesis, University of Florida. Accessed December 06, 2019. http://ufdc.ufl.edu/AA00022726.

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

MLA Handbook (7^th Edition):

Balachandran, Vinayagamoorthy, 1952-. “Inelastic analysis of frame structures including member and joint shears.” 1984. Web. 06 Dec 2019.

Vancouver:

Balachandran, Vinayagamoorthy 1. Inelastic analysis of frame structures including member and joint shears. [Internet] [Thesis]. University of Florida; 1984. [cited 2019 Dec 06]. Available from: http://ufdc.ufl.edu/AA00022726.

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

Council of Science Editors:

Balachandran, Vinayagamoorthy 1. Inelastic analysis of frame structures including member and joint shears. [Thesis]. University of Florida; 1984. Available from: http://ufdc.ufl.edu/AA00022726

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

16. Maniatakis, Charilaos. Απόκριση κατασκευών σε σεισμικές διεγέρσεις του εγγύς-πεδίου.

Degree: 2015, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)

URL: http://hdl.handle.net/10442/hedi/36537

►

The subject of the present thesis is the seismic design of structures located in the so-called near-source region of active tectonic faults. The aim is… (more)

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The subject of the present thesis is the seismic design of structures located in the so-called near-source region of active tectonic faults. The aim is to contribute to: (a) the definition of the distance from the fault within which the special characteristics of near-source strong ground motion must be taken into account in the design; (b) the study of the variations to be applied to the standard design spectrum to take account of the near-fault effects; (c) the assessment of existing methods for seismic design of new and existing structures for near-fault earthquakes. In order to define the near-fault region a process is applied based on the satisfaction of appropriate damage criteria. Emphasis is given to records from Greece with small and medium magnitude typical of seismic activity in Europe. A new methodology is presented to calculate the elastic displacement spectrum for different values of the damping correction factor in the near-fault area using a sample of earthquakes with small-to-medium magnitude. The nonlinear dynamic response under far- and near-fault seismic excitations is investigated for multi degree-of-freedom systems with emphasis on higher-mode effects. A prototype nine-storey moment resisting frame with a domination of the first mode is selected as a case study. The accuracy of a proposed modified Modal Response Spectrum Analysis (mMRSA) method and other available methods is evaluated by comparing the results with the ones of the nonlinear response history.

Αντικείμενο της παρούσας διατριβής είναι ο αντισεισμικός σχεδιασμός δομημάτων σε θέσεις που βρίσκονται στο κοντινό ή εγγύ πεδίο ενεργών ρηγμάτων. Στόχος είναι να συμβάλλει: (α) στην οριοθέτηση της απόστασης από το ρήγμα εντός της οποίας τα ιδιαίτερα χαρακτηριστικά της ισχυρής εδαφικής κίνησης στο κοντινό πεδίο οφείλουν να λαμβάνονται υπόψη στο σχεδιασμό, (β) στη μελέτη των τροποποιήσεων που πρέπει να εφαρμοστούν στο κλασικό φάσμα σχεδιασμού για να ληφθούν υπόψη τα φαινόμενα κοντινού πεδίου, και (γ) στην αποτίμηση υφιστάμενων μεθόδων αντισεισμικού σχεδιασμού νέων και αποτίμησης υφιστάμενων κατασκευών για κινήσεις κοντινού πεδίου. Προκειμένου να οριοθετηθεί η περιοχή κοντινού πεδίου εφαρμόζεται μία διαδικασία η οποία βασίζεται στην ικανοποίηση κριτηρίων βλάβης. Έμφαση δίνεται σε καταγραφές από τον ελληνικό χώρο και σε μικρά και μεσαία μεγέθη τα οποία χαρακτηρίζουν περισσότερο τον ευρωπαϊκό χώρο. Στη συνέχεια αναπτύσσεται μια καινούργια μεθοδολογία υπολογισμού του ελαστικού φάσματος μετακινήσεων για διαφορετικές τιμές του συντελεστή απόσβεσης χρησιμοποιώντας δείγμα σεισμικών καταγραφών κοντινού πεδίου από σεισμικά γεγονότα μικρού και μεσαίου μεγέθους. Επιπρόσθετα διερευνάται η μη-γραμμική δυναμική συμπεριφορά σε σεισμικές διεγέρσεις τόσο κοντινού όσο και μακρινού πεδίου πολυβάθμιων συστημάτων με έμφαση στις επιδράσεις των ανώτερων ιδιομορφών. Επιλέγεται ως πρότυπο παράδειγμα ένα εννιαώροφο πλαίσιο από οπλισμένο σκυρόδεμα στο οποίο αναμένεται να δεσπόζει η συμμετοχή της πρώτης ιδιομορφής. Αποτιμάται η ακρίβεια μιας προτεινόμενης τροποποιημένης…

Subjects/Keywords: Κινήσεις κοντινού-πεδίου; Παράμετροι ισχυρής εδαφικής κίνησης; Δεσπόζουσα περίοδος; Ελαστικό φάσμα μετακινήσεων; Διορθωτικός συντελεστής απόσβεσης; Επιδράσεις ανωτέρων ιδιομορφών; Ιδιομορφική απόκριση; Συντελεστής συμπεριφοράς; Τροποποιημένη ιδιομορφική ανάλυση φάσματος απόκρισης; Αντισεισμικός σχεδιασμός; Near-fault ground motion; Strong ground motion parameters; Dominant period; Elastic displacement spectrum; Damping correction factor; Higher-mode effects; Modal response; Reduction factor; Modified modal response spectrum analysis method; Seismic design

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APA (6^th Edition):

Maniatakis, C. (2015). Απόκριση κατασκευών σε σεισμικές διεγέρσεις του εγγύς-πεδίου. (Thesis). National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Retrieved from http://hdl.handle.net/10442/hedi/36537

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):

Maniatakis, Charilaos. “Απόκριση κατασκευών σε σεισμικές διεγέρσεις του εγγύς-πεδίου.” 2015. Thesis, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Accessed December 06, 2019. http://hdl.handle.net/10442/hedi/36537.

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

MLA Handbook (7^th Edition):

Maniatakis, Charilaos. “Απόκριση κατασκευών σε σεισμικές διεγέρσεις του εγγύς-πεδίου.” 2015. Web. 06 Dec 2019.

Vancouver:

Maniatakis C. Απόκριση κατασκευών σε σεισμικές διεγέρσεις του εγγύς-πεδίου. [Internet] [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2015. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10442/hedi/36537.

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

Council of Science Editors:

Maniatakis C. Απόκριση κατασκευών σε σεισμικές διεγέρσεις του εγγύς-πεδίου. [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2015. Available from: http://hdl.handle.net/10442/hedi/36537

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

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