Plasolver: Physics-Informed Neural Operators for Elastoplasticity

[2608.15157] Plasolver: Physics-Informed Neural Operators for Elastoplasticity Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Physics > Computational Physics arXiv:2608.15157 (physics) [Submitted on 15 Aug 2026] Title: Plasolver: Physics-Informed Neural Operators for Elastoplasticity Authors: Yizheng Wang , Mohammad Sadegh Eshaghi , Huadong Zhang , Xiaoying Zhuang , Timon Rabczuk , Yinghua Liu View a PDF of the paper titled Plasolver: Physics-Informed Neural Operators for Elastoplasticity, by Yizheng Wang and 5 other authors View PDF HTML (experimental) Abstract: Elastoplastic analysis is computationally demanding because its nonlinear, path-dependent constitutive behavior requires incremental loading and repeated iterative solutions. To address this challenge, we propose Plasolver, a physics-informed neural operator framework that combines the efficiency of operator learning with the accuracy and robustness of classical numerical solvers. Plasolver consists of a physics-informed pretraining stage and an optional warm-start stage. During pretraining, the neural operator is trained solely by minimizing the incremental potential energy of elastoplasticity formulated by Simo, without requiring any labeled solution data. It operates directly on unstructured point clouds by encoding spatial coordinates, loading histories, and material properties as unified point-wise prompts. This formulation provides dual invariance to spatial and loading-path discretizations, enabling consistent predictions across different spatial resolutions and different numbers of increments representing the same loading trajectory. The pretrained Plasolver achieves relative errors on the order of 1\% while providing approximately two orders of magnitude acceleration over conventional finite element simulations. In the warm-start stage, the pretrained prediction is supplied as the initial solution to a classical iterative solver, preserving its numerical accuracy, robustness, and convergence properties while substantially accelerating convergence. Numerical results show that Plasolver reduces the required number of iterations by approximately 50\% compared with conventional zero-initialized solvers and converges to solutions at any prescribed tolerance. Plasolver thus provides an efficient, accurate, and discretization-invariant computational framework for nonlinear, path-dependent elastoplastic problems. Subjects: Computational Physics (physics.comp-ph) Cite as: arXiv:2608.15157 [physics.comp-ph] (or arXiv:2608.15157v1 [physics.comp-ph] for this version) https://doi.org/10.48550/arXiv.2608.15157 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Yizheng Wang [ view email ] [v1] Sat, 15 Aug 2026 10:14:20 UTC (44,887 KB) Full-text links: Access Paper: View a PDF of the paper titled Plasolver: Physics-Informed Neural Operators for Elastoplasticity, by Yizheng Wang and 5 other authors View PDF HTML (experimental) TeX Source view license Current browse context: physics.comp-ph < prev | next > new | recent | 2026-08 Change to browse by: physics References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... 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