We propose a reduced space mixed finite element method (MFEM) built on a Skinning Eigenmode subspace and material-aware cubature scheme. Our solver is well-suited for simulating scenes with large material and geometric heterogeneities in real-time. This mammoth geometry is composed of 98,175 vertices and 531,565 tetrahedral elements and with a heterogenous composition of widely varying materials of muscles (E=5×105 Pa), joints (E=1×105 Pa), and bone (E=1×1010 Pa). The resulting simulation runs at 120 frames per second (FPS).
@article{arxiv.2405.13730,
title = {Subspace Mixed-FEM for Real-Time Heterogeneous Elastodynamics},
author = {Ty Trusty and Otman Benchekroun and Eitan Grinspun and Danny M. Kaufman and David I. W. Levin},
journal= {arXiv preprint arXiv:2405.13730},
year = {2024}
}