A robust and scalable unfitted adaptive finite element framework for nonlinear solid mechanics
نویسندگان
چکیده
In this work, we bridge standard adaptive mesh refinement and coarsening on scalable octree background meshes robust unfitted finite element formulations for the automatic efficient solution of large-scale nonlinear solid mechanics problems posed complex geometries, as an alternative to body-fitted formulations, unstructured generation graph partitioning strategies. We pay special attention those aspects requiring a specialized treatment in extension h-adaptive aggregated method parallel tree-based meshes, recently developed linear scalar elliptic problems, handle mechanics. order accurately efficiently capture localized phenomena that frequently occur perform pseudo time-stepping combination with dynamic rebalancing driven by a-posteriori error estimators. The is implemented considering both irreducible mixed (u/p) thus it able robustly face involving incompressible materials. numerical experiments, are used model inelastic behavior wide range compressible First, selected set benchmarks reproduced verification step. Second, experiments presented geometries. Among them, cantilever beam problem spherical hollows distributed Simple Cubic array. This test involves discrete domain up 11.7M Degrees Of Freedom solved less than two hours 3072 cores supercomputer.
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ژورنال
عنوان ژورنال: Computer Methods in Applied Mechanics and Engineering
سال: 2021
ISSN: ['0045-7825', '1879-2138']
DOI: https://doi.org/10.1016/j.cma.2021.114093