论文部分内容阅读
采用ABAQUS软件模拟了标准圆柱形岩样在弹性、理想弹塑性、D-P准测强度条件下、蠕变条件下的应力、变形特征,重点模拟岩样在松弛应力环境下的动态力学特征。分析了岩石类材料在不同位移荷载条件下的力学特性。最终通过对应力松弛环境下不同位移荷载条件下模拟的结果进行分析比较并在同一坐标中画出模拟出来的应力松弛曲线后,得出了主要的结论如下:(1)在不同位移荷载下,岩样所表现出的松弛特性强度也会有所不同。同时在理论分析中明确了C-M准则在其它准则中的重要地位。(2)在误差允许的范围内,ABAQUS所模拟出来的应力松弛曲线和典型的应力松弛曲线基本吻合
The ABAQUS software was used to simulate the stress and deformation characteristics of a standard cylindrical rock specimen under elastic, ideal elasto-plastic and D-P test conditions. The mechanical properties of rock materials under different displacement loads are analyzed. Finally, through the analysis and comparison of the simulation results under different displacement loads in the stress relaxation environment and draw the simulated stress relaxation curves in the same coordinates, the main conclusions are as follows: (1) Under different displacement loads, The strength of the relaxation properties exhibited by the rock samples will also vary. At the same time, the important position of C-M criterion in other criteria is clarified in theoretical analysis. (2) Within the allowable range of error, the stress relaxation curve simulated by ABAQUS is basically consistent with the typical stress relaxation curve