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[1]吕斐,缪新婷,周昌玉.孔洞对单边裂纹板裂纹扩展方向的影响[J].南京工业大学学报(自然科学版),2017,39(04):86-92.[doi:10.3969/j.issn.1671-7627.2017.04.015]
 LYU Fei,MIAO Xinting,ZHOU Changyu.Effects of the hole on the crack propagation direction in single edge-cracked plate[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2017,39(04):86-92.[doi:10.3969/j.issn.1671-7627.2017.04.015]
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孔洞对单边裂纹板裂纹扩展方向的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
39
期数:
2017年04期
页码:
86-92
栏目:
出版日期:
2017-07-20

文章信息/Info

Title:
Effects of the hole on the crack propagation direction in single edge-cracked plate
文章编号:
1671-7627(2017)04-0086-07
作者:
吕斐缪新婷周昌玉
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
LYU FeiMIAO XintingZHOU Changyu
College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
单边裂纹板 孔洞 扩展有限元法 裂纹扩展路径 应力影响系数 偏转角
Keywords:
single edge-cracked plate hole extended finite element method(XFEM) crack propagation path stress influence coefficient deflection angle
分类号:
O346.1
DOI:
10.3969/j.issn.1671-7627.2017.04.015
文献标志码:
A
摘要:
平板内孔洞产生的应力集中会对板内裂纹扩展路径产生“吸引”作用,使其偏离原来直线方向。运用扩展有限元法研究了单边裂纹板内单孔洞的位置和大小对应力集中和裂纹扩展路径的影响以及双孔洞单边裂纹板内裂纹的扩展情况。同时引入应力影响系数来表征开孔边缘处应力对裂纹扩展路径所产生“吸引”作用的强弱,结果表明,在同一模型中应力影响系数的变化趋势和裂纹扩展路径偏转角的变化趋势一致。
Abstract:
The stress concentration caused by hole in the plate would produce "attraction" effect on the crack propagation path and makes it deviate from the original straight line.The extended finite element method(XFEM)was used to investigate the effect of the single hole’s position and size in single edge-cracked plate on the stress concentration and crack propagation path,and the crack propagation with double holes in single edge-cracked plate.The strength of "attraction" on the crack propagation path from the concentrated stress at the edge of the hole was characterized with the stress influence coefficient.Results showed that the variation tendency of the stress influence coefficient and the variation trend of deflection angle of the crack propagation path were consistent in the same model.

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备注/Memo

备注/Memo:
收稿日期:2016-05-03
基金项目:国家自然科学基金(51475223,51075199)
作者简介:吕斐(1993—),男,江苏泰州人,硕士,主要研究方向为基于扩展有限元法的Ⅰ-Ⅱ复合型裂纹扩展研究; 周昌玉(联系人),教授,E-mail:cy_zhou@njtech.edu.cn.
引用本文:吕斐,缪新婷,周昌玉.孔洞对单边裂纹板裂纹扩展方向的影响[J].南京工业大学学报(自然科学版),2017,39(4):86-92..
更新日期/Last Update: 2017-07-31