A coupling model of element-based peridynamics and finite element method for elastic-plastic deformation and fracture analysis

被引：28
|
作者：
Liu, Shuo [1 ]
Fang, Guodong [1 ]
Fu, Maoqing [1 ]
Yan, Xiangqiao [1 ]
Meng, Songhe [1 ]
Liang, Jun [2 ]
机构：
[1] Harbin Inst Technol, Sci & Technol Adv Composites Special Environm Key, Harbin 150001, Peoples R China
[2] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2022年 / 220卷
基金：
黑龙江省自然科学基金; 中国国家自然科学基金;
关键词：
Element -based peridynamics; Finite element method; Coupling; Elastic-plastic; Crack propagation; STATE-BASED PERIDYNAMICS; CRACK-PROPAGATION; FEM MESHES; FORMULATION; SIMULATION; INITIATION; FRAMEWORK;
D O I：
10.1016/j.ijmecsci.2022.107170
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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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收藏
页数：27
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