看到论坛中一些讨论应力应变曲线的帖子,但似乎不容易得到。我想知道能不能通过CASTEP计算得到弹性常数后,根据分析文件中的一些数据得到应力应变曲线。
A linear fit of the stress-strain relationship for each component of the stress is given in the following format:
Stress Cij value of value of
index index stress strain
1 1 -12.255858 -0.003000
1 1 -13.154269 -0.001800
1 1 -14.042415 -0.000600
1 1 -14.910298 0.000600
1 1 -15.792607 0.001800
1 1 -16.686454 0.003000
C (gradient) : 736.568500
Error on C : 1.743124
Correlation coeff: 0.999989
Stress intercept : -14.473650