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Development of a Fully-Tabulated, Anisotropic and Asymmetric Material Model for LS-DYNA (*MAT_264)

The purpose of this research is to develop a fully-tabulated, anisotropic, asymmetric and rate dependent material model for solid elements. Physical tests of several metallic materials have shown to have anisotropic (or orthotropic) characteristics. While many material models in LS-DYNA currently have anisotropic modeling options, they are typically focused on the material forming applications – not crash and impact analysis. Unlike most anisotropic forming material models, this model will have: rate dependency, temperature dependency, tabulated hardening (as opposed to parameterized inputs), associated flow, directional tensile compressive asymmetry and the ability to maintain stability for large deformations.