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In modern engineering designs, advanced materials (e.g.,fiber/particle-reinforced polymers, metallic alloys, laminar composites, etc.)are widely used, where microscale heterogeneities such as grains, inclusions,voids, micro-cracks, and interfaces significantly affect the macroscopicconstitutive behaviors. Obviously, an accurate description of the multiscalematerial behaviors is of great importance to the success of material design andstructural analysis. The Representative Volume Element (RVE) analysis methodprovides a rigorous means to obtain homogenized macroscopic material propertiesat the upper length scale from the properties of the material constituents andstructures at a lower length scale. Recently, we have developed an RVE module(keyword: *RVE_ANALYSIS_FEM) in the multiphysics simulation software LS-DYNA toenable high-fidelity virtual testing of numerically re-constructed materialsamples at user-specified characteristic length scales. In this article, abrief introduction to this new feature will be given.

RVE Analysis in LS-DYNA for High-fidelity Multiscale Material Modeling