An Extended Bond-Based Peridynamic Approach for Analysis on Fracture in Brittle Materials

被引：25

作者：

Li, Shuang ^{[1
]}

Jin, Yanli ^{[1
]}

Huang, Xiaohua ^{[1
]}

Zhai, Lianjun ^{[1
]}

机构：

[1] Guangxi Univ, Coll Civil Engn & Architecture, Minist Educ,Key Lab Disaster Prevent & Struct Saf, Guangxi Key Lab Disaster Prevent & Engn Safety, Nanning 530004, Peoples R China

来源：

MATHEMATICAL PROBLEMS IN ENGINEERING | 2020年 / 2020卷

基金：

中国国家自然科学基金;

关键词：

CRACK-PROPAGATION; ADAPTIVE REFINEMENT; DEFORMATION; FORMULATION;

D O I：

10.1155/2020/9568015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To enhance the calculation accuracy of bond-based peridynamics (BPD), a novel attenuation function is introduced to describe the effect of internal length on nonlocal long-range forces. Furthermore, the expression of the micromodulus function is deduced, and the corresponding fracture criteria are established. The validity and accuracy of the extended bond-based peridynamic approach are illustrated by three numerical examples: 2D isotropic plate under uniaxial loading; plate with a circular cutout under quasi-static loading; and a diagonally loaded square plate with a center pre-existing crack. Finally, the influence of the width and the angle of the pre-existing crack on the fracture initiation time and the crack propagation paths are studied by applying the proposed approach.

引用

页数：12

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