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单轴拉伸条件下细观非均匀性岩石损伤局部化和应力应变关系分析

周小平 王建华 张永兴 哈秋聆

周小平, 王建华, 张永兴, 哈秋聆. 单轴拉伸条件下细观非均匀性岩石损伤局部化和应力应变关系分析[J]. 应用数学和力学, 2004, 25(9): 943-950.
引用本文: 周小平, 王建华, 张永兴, 哈秋聆. 单轴拉伸条件下细观非均匀性岩石损伤局部化和应力应变关系分析[J]. 应用数学和力学, 2004, 25(9): 943-950.
ZHOU Xiao-ping, WANG Jian-hua, ZHANG Yong-xing, HA Qiu-ling. Analysis of the Localization of Damage and the Complete Stress-Strain Relation for Mesoscopic Heterogeneous Rock Under Uniaxial Tensile Loading[J]. Applied Mathematics and Mechanics, 2004, 25(9): 943-950.
Citation: ZHOU Xiao-ping, WANG Jian-hua, ZHANG Yong-xing, HA Qiu-ling. Analysis of the Localization of Damage and the Complete Stress-Strain Relation for Mesoscopic Heterogeneous Rock Under Uniaxial Tensile Loading[J]. Applied Mathematics and Mechanics, 2004, 25(9): 943-950.

单轴拉伸条件下细观非均匀性岩石损伤局部化和应力应变关系分析

基金项目: 国家自然科学基金资助项目(59879012;59649008)
详细信息
    作者简介:

    周小平(1970),男,江西瑞金人,博士,副教授(联系人.Tel:+86-23-65405987;Fax:+86-23-65121982;E-mail:zhouxiaopinga@sina.com).

  • 中图分类号: TU45

Analysis of the Localization of Damage and the Complete Stress-Strain Relation for Mesoscopic Heterogeneous Rock Under Uniaxial Tensile Loading

  • 摘要: 岩石在拉应力状态下的力学特性不同于压应力状态下的力学特性.利用细观力学理论研究了细观非均匀性岩石拉伸应力应变关系包括:线弹性阶段、非线性强化阶段、应力降阶段、应变软化阶段.模型考虑了微裂纹方位角为Weibull分布和微裂纹长度的分布密度函数为Rayleigh函数时对损伤局部化和应力应变关系的影响,分析了产生应力降和应变软化的主要原因是损伤和变形局部化.通过和实验成果对比分析验证了模型的正确性和有效性.
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出版历程
  • 收稿日期:  2002-07-15
  • 修回日期:  2004-03-15
  • 刊出日期:  2004-09-15

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