TY  - EJOU
AU  - Zu, Liping 
AU  - Liu, Yaxun 
AU  - Zhang, Haoran 
AU  - Liu, Lisheng 
AU  - Lai, Xin 
AU  - Mei, Hai 

TI  - An Elastoplastic Fracture Model Based on Bond-Based Peridynamics
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2024
VL  - 140
IS  - 3
SN  - 1526-1506

AB  - Fracture in ductile materials often occurs in conjunction with plastic deformation. However, in the bond-based peridynamic (BB-PD) theory, the classic mechanical stress is not defined inherently. This makes it difficult to describe plasticity directly using the classical plastic theory. To address the above issue, a unified bond-based peridynamics model was proposed as an effective tool to solve elastoplastic fracture problems. Compared to the existing models, the proposed model directly describes the elastoplastic theory at the bond level without the need for additional calculation means. The results obtained in the context of this model are shown to be consistent with FEM results in regard to force-displacement curves, displacement fields, stress fields, and plastic deformation regions. The model exhibits good capability of capturing crack propagation in ductile material failure problems.
KW  - Ductile materials; plastic deformation; bond-based peridynamics; isotropic hardening; fracture analysis

DO  - 10.32604/cmes.2024.050488