单轴压缩下红砂岩低周疲劳损伤特性分析
首发时间:2010-12-21
摘要:采用RMT150岩石力学试验系统完成了红砂岩低周疲劳试验。结果表明,红砂岩低周疲劳曲线可以分成两个部分。轴向变形总量的发展具有明显的初始阶段、等速阶段和加速阶段等三阶段特征。通过引入显式的硬化参量对低周疲劳损伤模型进行了改进,对红砂岩低周疲劳试验结果进行了定量分析,得到的损伤发展方程反映了疲劳破坏过程的损伤演化情况。试验结果与理论分析结果基本一致。
For information in English, please click here
Analysis on Low Cycle Fatigue Damage Characteristics of Red Sandstone under Uniaxial Compression
Abstract:Low cycle fatigue test of red sandstone is completed by RMT150 rock mechanics test system. The results show that low cycle fatigue test curve of red sandstone is divided into two parts. It is obvious that the development of the whole axial deformation has the following three stage feature: initial stage, constant speed stage and acceleration stage. Low cycle fatigue damage model is improved by introducing explicit hardening parameter, the low cycle fatigue test results of red sandstone are quantitatively analyzed, the obtained damage developing formula reflects the damage development of fatigue failure process. The test results is basically in accordance with the theory analysis results.
Keywords: Uniaxial Compression Red Sandstone Fatigue test Damage Characteristic prediction
论文图表:
引用
No.4397820558713129****
同行评议
共计0人参与
勘误表
单轴压缩下红砂岩低周疲劳损伤特性分析
评论
全部评论0/1000