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投稿时间：2012-12-14 修订日期：2013-02-24
投稿时间：2012-12-14 修订日期：2013-02-24
中文摘要: 多裂纹问题已成为当前岩石力学及其相关领域的研究热点问题，本文就无限平面内三条对称的共线裂纹在双向压缩载荷下的应力强度因子进行了研究，考虑了裂纹表面摩擦力的影响及裂纹间的相互影响，并利用复变函数理论给出了其裂纹应力强度因子的精确解析解。然后通过数值计算，给出了侧压力以及裂纹间距对应力强度因子的影响规律，并进行了相应的光弹实验研究，其实验结果定性地验证了理论解的正确性。结果表明裂纹应力强度因子都随着侧压力的增大而减小，随着裂纹间距的减小而增大。
中文关键词: 应力强度因子，解析解，侧压力，裂纹间距
Abstract: Multi-crack problem has become a key issue in the field of rock mechanics as well as its related disciplines. In this paper, three symmetric collinear cracks in an infinite plate under biaxial compression have been investigated. Considering crack surface friction and the effect of the interval distance between two adjacent cracks, and combining complex stress function theory, the exact analytical solution of stress intensity factor (SIF) for three collinear cracks inside an infinite plate under biaxial compression is presented. The effects of the confining stress as well as the interval distance between two adjacent cracks on SIF have been analyzed through the calculation results. The corresponding photoelastic experiments were conducted and the results agree with the analytical result. The results show that SIF decreases as confining stress increases, and SIF increases as the interval distance between two adjacent cracks decreases.
文章编号：201201060 中图分类号： 文献标志码：
基金项目:国家自然科学基金
| 作者 | 单位 | |
| 郑涛 | 四川大学 | 472290890@qq.com |
| 朱哲明* | 四川大学建筑与环境学院 | Zhemingzhu@hotmail.com |
| Author Name | Affiliation | |
| zhengtao | Sichuan University | 472290890@qq.com |
| 朱哲明 | College of Architecture and Environment,Sichuan University | Zhemingzhu@hotmail.com |
作者简介:
引用文本：
郑涛,朱哲明.压缩荷载下三条对称的共线裂纹应力强度因子的解析解(研究生论坛）[J].工程科学与技术,2013,45(Z1):58-62.
zhengtao,朱哲明.The Analytical Solution of Stress Intensity Factor for Three Symmetric Collinear Cracks under Compression[J].Advanced Engineering Sciences,2013,45(Z1):58-62.
引用文本：
郑涛,朱哲明.压缩荷载下三条对称的共线裂纹应力强度因子的解析解(研究生论坛）[J].工程科学与技术,2013,45(Z1):58-62.
zhengtao,朱哲明.The Analytical Solution of Stress Intensity Factor for Three Symmetric Collinear Cracks under Compression[J].Advanced Engineering Sciences,2013,45(Z1):58-62.