Modeling the elastic-plastic response of metals is an important issue in a variety of industries. The ability to leverage existing and new material model functionality in engineering analysis relies upon practical considerations such as numerical integration, code implementation, verification, calibration, etc., with the requirement that models are implemented correctly and are not prohibitively expensive. A family of modular plasticity models have been implemented in the Sierra/SolidMechanics finite element code that allow for a wide range of yield surfaces, hardening models, and failure models. Assessments of model performance in assorted boundary value problems are presented to understand the tradeoffs between expensive, high fidelity simulations and lower fidelity simulations.
Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525.