期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 220, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2022.107170
关键词
Element -based peridynamics; Finite element method; Coupling; Elastic-plastic; Crack propagation
资金
- National Natural Science Foundation of China [11732002, 12090030]
- Natural Science Foundation of Heilongjiang Province of China [YQ2021A004]
An element-based peridynamics (EBPD) and finite element method (FEM) coupling model is proposed for solving elastic-plastic deformation and failure problems, with the use of non-local stress and strain concepts to describe material properties and improve computational efficiency.
An element-based peridynamics (EBPD) and finite element method (FEM) coupling model is proposed to solve the elastic-plastic deformation and failure problems. The FEM and EBPD are used in the boundary region and the interior elastic-plastic crack growth region, respectively. A scheme is proposed to improve the computation ef-ficiency of EBPD by deleting the bad quality elements in the horizon of each PD node. EBPD has the non-local stress and non-local strain concepts to conveniently describe the yield stress and equivalent plastic strain, and does not have instability problems. The elastic-plastic computation framework is used in the coupling model solved by the incremental method to calculate the elastic-plastic deformation and failure process. The coupling model can calculate the elastic-plastic problem with the linear and nonlinear hardening laws. A 2D elastic-plastic crack propagation process is also simulated by the proposed coupling model.
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