1. Comparison of barrier update strategies for interior point algorithms in single-crystal plasticity.
- Author
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Scheunemann, Lisa, Steinmetz, Felix, and Nigro, Paulo
- Subjects
- *
MATERIAL point method , *NUMERICAL analysis , *INTERIOR-point methods , *ALGORITHMS , *CRYSTALS - Abstract
This contribution discusses the influence of different barrier update strategies on the performance and robustness of an interior point algorithm for single-crystal plasticity at small strains. To this end, single-crystal plasticity is first briefly presented in the framework of a primal-dual interior point algorithm to outline the general algorithmic structure. The manner in which the barrier parameter is modified within the interior point method, steering the penalization of constraints, plays a crucial role for the robustness and efficiency of the overall algorithm. In this paper, we compare and analyze different strategies in the framework of crystal plasticity. In a thorough analysis of a numerical example covering a broad range of settings in monocrystals, we investigate robust hyperparameter ranges and identify the most efficient and robust barrier parameter update strategies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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