A critical elastic strain energy storage-based concept for characterizing crack propagation in elastic-plastic materials

被引：8

作者：

Chang, Dongdong ^{[1
]}

Yang, Xiaofa ^{[1
]}

Peng, Hao ^{[1
]}

Hou, Junling ^{[1
,2
,3
]}

Zuo, Hong ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Aerosp Engn, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Res Inst, Hangzhou 311215, Zhejiang, Peoples R China

[3] Xi An Jiao Tong Univ, Suzhou Inst, Suzhou 215123, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2022年 / 264卷

基金：

中国博士后科学基金;

关键词：

Elastic-plastic material; Crack propagation; Critical elastic strain energy storage; J-integral; PATH-INDEPENDENT INTEGRALS; T-STAR; DYNAMIC FRACTURE; DRIVING-FORCE; DAMAGE MODEL; GROWTH; TIP; CRITERIA; FAILURE;

D O I：

10.1016/j.engfracmech.2022.108335

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper provides a new insight on the problem of crack propagation in elastic-plastic materials from the perspective of the critical elastic strain energy release rate G(e). Specifically, G(e) is derived from the power balance during crack propagation with the elimination of plastic dissipation and is assumed available for new crack formation. To validate this assumption, a series of experiments are carried out. The results show that the critical elastic strain energy storage decreases linearly with the increase of crack length. Therefore, G(e) is believed as a more intrinsic parameter to describe the crack propagation in elastic-plastic materials.

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页数：15

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