A coupling model of element-based peridynamics and finite element method for elastic-plastic deformation and fracture analysis. (15th April 2022)

• Record Type: Journal Article
• Authors: Liu, Shuo; Fang, Guodong; Fu, Maoqing; Yan, Xiangqiao; Meng, Songhe; Liang, Jun
• Is Part Of: International journal of mechanical sciences. Volume 220(2022)
• Publication Date: 2022-04-15
• Subjects: Element-based peridynamics -- Finite element method -- Coupling -- Elastic-plastic -- Crack propagation; Mechanical engineering -- Periodicals; Génie mécanique -- Périodiques; Mechanical engineering; Maschinenbau; Mechanik; Zeitschrift; Periodicals; 621.05
• DOI: 10.1016/j.ijmecsci.2022.107170
• Languages: English
• ISSNs: 0020-7403

Abstract

Highlights: The coupling element-based peridynamics and finite element method are developed. The coupling model is proposed to solve the elastic-plastic deformation and failure problems. A reducing elements scheme for EBPD is proposed to improve computational efficiency. The coupling model can eliminate the surface effect in EBPD. Abstract: 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 efficiency 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. Graphical abstract: Image, graphical abstract