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In-plane characterization of 3K70PW carbon fabric/inf114 system for ls-dyna’s mat 213 material model
Jagadheeswaran, Shritha
Jagadheeswaran, Shritha
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t25015_Jagadheeswaran.pdf
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2025-05
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The in-plane characterization of 3K70PW fabric/INF 114 resin system for LS-Dyna’s MAT 213 material model is presented in this thesis. Obtaining material properties, flow rule parameters, tabulated stress-strain curves, and damage data for the material system of interest were key aspects of this research. Basic tension, compression, in-plane shear, and 45° off-axis tension/compression tests were conducted in accordance with the respective ASTM test standards. Digital Image Correlation (DIC) using GOM ARAMIS Photogrammetry system was used for strain mapping for the aforementioned test procedures. The influence of changing DIC parameters such as facet sizes and overlap on the obtained data was studied as part of this investigation.
Yield strengths were obtained from the mechanical test data and using a quadratic yield function based on Tsai-Wu’s failure criterion to develop a convex yield surface. These strengths were used to develop stress -vs- plastic strain curves for different loading modes. Finally, the flow rule coefficients that determine the plastic flow potential of the material system according to the non-associate flow rule were computed by minimizing the error between effective stresses from a chosen master curve and those from different loading modes. This study focused on obtaining all the input parameters necessary to model the non-linear behavior of the 3KPW70 material system using the MAT 213 material model.
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Thesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Aerospace Engineering
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Wichita State University
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