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Rutgers University

1. Jin, BoCheng, 1986-. 3-D numerical simulation and analysis of complex fiber geometry RaFC materials with high volume fraction and high aspect ratio based on ABAQUS PYTHON.

Degree: MS, Mechanical and Aerospace Engineering, 2011, Rutgers University

Organic and inorganic fiber reinforced composites with innumerable fiber orientation distributions and fiber geometries are abundantly available in several natural and synthetic structures. Inorganic glass fiber composites have been introduced to numerous applications due to their economical fabrication and tailored structural properties. Numerical characterization of such composite material systems is necessitated due to their intrinsic statistical nature, which renders extensive experimentation prohibitively time consuming and costly. To predict various mechanical behavior and characterizations of Uni-Directional Fiber Composites (UDFC) and Random Fiber Composites (RaFC), we numerically developed Representative Volume Elements (RVE) with high accuracy and efficiency and with complex fiber geometric representations encountered in uni-directional and random fiber networks. In this thesis, the numerical simulations of unidirectional RaFC fiber strand RVE models (VF>70%) are first presented by programming in ABAQUS PYTHON. Secondly, when the cross sectional aspect ratios (AR) of the second phase fiber inclusions are not necessarily one, various types of RVE models with different cross sectional shape fibers are simulated and discussed. A modified random sequential absorption algorithm is applied to enhance the volume fraction number (VF) of the RVE, which the mechanical properties represents the composite material. Thirdly, based on a Spatial Segment Shortest Distance (SSSD) algorithm, a 3-Dimentional RaFC material RVE model is simulated in ABAQUS PYTHON with randomly oriented and distributed straight fibers of high fiber aspect ratio (AR=100:1) and volume fraction (VF=31.8%). Fourthly, the piecewise multi-segments fiber geometry is obtained in MATLAB environment by a modified SSSD algorithm. Finally, numerical methods including the polynomial curve fitting and piecewise quadratic and cubic B-spline interpolation are applied to optimize the RaFC fiber geometries. Based on the multi-segments fiber geometries and aforementioned techniques, smooth curved fiber geometries depicted by cubic B-spline polynomial interpolation are obtained and different types of RaFC RVEs with high fiber filament aspect ratio (AR>3000:1) and high RVE volume fraction (VF>40.29%) are simulated by ABAQUS scripting language PYTHON programming. Advisors/Committee Members: Jin, BoCheng, 1986- (author), Pelegri, Assimina A. (chair), Dill, Ellis H. (internal member), Gea, Hae Chang (internal member).

Subjects/Keywords: Composite materials

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APA (6th Edition):

Jin, BoCheng, 1. (2011). 3-D numerical simulation and analysis of complex fiber geometry RaFC materials with high volume fraction and high aspect ratio based on ABAQUS PYTHON. (Masters Thesis). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000061295

Chicago Manual of Style (16th Edition):

Jin, BoCheng, 1986-. “3-D numerical simulation and analysis of complex fiber geometry RaFC materials with high volume fraction and high aspect ratio based on ABAQUS PYTHON.” 2011. Masters Thesis, Rutgers University. Accessed February 17, 2019. http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000061295.

MLA Handbook (7th Edition):

Jin, BoCheng, 1986-. “3-D numerical simulation and analysis of complex fiber geometry RaFC materials with high volume fraction and high aspect ratio based on ABAQUS PYTHON.” 2011. Web. 17 Feb 2019.

Vancouver:

Jin, BoCheng 1. 3-D numerical simulation and analysis of complex fiber geometry RaFC materials with high volume fraction and high aspect ratio based on ABAQUS PYTHON. [Internet] [Masters thesis]. Rutgers University; 2011. [cited 2019 Feb 17]. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000061295.

Council of Science Editors:

Jin, BoCheng 1. 3-D numerical simulation and analysis of complex fiber geometry RaFC materials with high volume fraction and high aspect ratio based on ABAQUS PYTHON. [Masters Thesis]. Rutgers University; 2011. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000061295

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