单轴拉伸条件下细观非均匀性岩石本构关系研究

被引:7
作者
周小平
张永兴
朱可善
机构
[1] 重庆大学土木工程学院,重庆大学土木工程学院,重庆大学土木工程学院
关键词
单轴拉伸; 细观非均匀性岩石; 损伤力学; 损伤和变形局部化; 应力应变全过程;
D O I
10.15951/j.tmgcxb.2005.03.021
中图分类号
TU454 [变形测量];
学科分类号
0801 ; 080104 ; 0815 ;
摘要
用损伤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) ,分析了产生应力跌落和应变软化的主要原因是损伤和变形局部化,将损伤和变形局部化引入本构模型是和以往模型的重要区别。通过和试验成果对比分析验证了模型的正确性和有效性。
引用
收藏
页码:87 / 93
页数:7
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