考虑偶应力影响的有限大板单边裂纹计算

山东大学学报(工学版)

考虑偶应力影响的有限大板单边裂纹计算

郝明辉¹;王锡平¹;王敏¹;周慎杰²

1. 山东大学土建与水利学院，山东济南 250061； 2. 山东大学机械工程学院，山东济南 250061

收稿日期:2006-11-02 修回日期:1900-01-01 出版日期:2008-04-16 发布日期:2008-04-16
通讯作者: 郝明辉

The solution of a oneedge crack of a finite plate with the influence of couple stress in a uniform tension field

HAO Ming-hui¹， WANG Xi-ping¹， WANG Min¹， ZHOU Shen-jie²

1. School of Civil Engineering, Shandong University, Jinan 250061, China；2. School of Mechanical Engineering, Shandong University, Jinan 250061, China

Received:2006-11-02 Revised:1900-01-01 Online:2008-04-16 Published:2008-04-16
Contact: HAO Ming-hui

摘要/Abstract

摘要： 裂纹尖端存在很大的应变梯度，应变梯度效应对裂纹尖端附近的应力场和微尺度下的断裂行为产生显著影响.本文采用基于偶应力理论的无网格迦辽金法计算有限大板单边裂纹尖端的应力场和应力强度因子，分析了偶应力对裂纹尖端的影响.计算结果表明基于偶应力理论的无网格法的有效性和可行性.

关键词: 偶应力理论, 应力强度因子, 无网格迦辽金法

Abstract: There is stress concentration in the crack tip. It has apparent effect on the stress field of the crack tip and the fracture behavior of the material.The stress concentration factor of a finite plate in a uniform tension field with the element-free method was calculated based on the couple stress theory, and the influence of couple stress on the stress field in crack tip was analyzed. The result shows the feasibility and efficiency of this method.

Key words: the couple stress theory, stress concentration factor, element-free method

中图分类号:

O241.82

郝明辉,王锡平,王敏,周慎杰 .

考虑偶应力影响的有限大板单边裂纹计算

[J]. 山东大学学报(工学版), 2008, 38(2): 92-95 .

HAO Ming-hui,WANG Xi-ping,WANG Min,ZHOU Shen-jie .

The solution of a oneedge crack of a finite plate with the influence of couple stress in a uniform tension field

[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(2): 92-95 .

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