Softening behavior in Mohr-coulomb
Softening behavior in Mohr-coulomb
(OP)
Hello everyone,
I wish someone help me to understand how to apply the softening behavior of rock in Mohr-coulomb.
I know the friction angle and cohesion of the rock sample from the shear test. Moreover, i have the stress-strain curve for the rock (Uniaxial compression test).
the rock sample shows softening after the peak stress was reached.
in the "Cohesion" in Mohr-Coulomb i put the Cohesion yield stress = 200 psi and Abs. plastic strain =0. I expect to see elastic-perfect plastic stress-strain curve, but i did not see that behavior.
Thanks
I wish someone help me to understand how to apply the softening behavior of rock in Mohr-coulomb.
I know the friction angle and cohesion of the rock sample from the shear test. Moreover, i have the stress-strain curve for the rock (Uniaxial compression test).
the rock sample shows softening after the peak stress was reached.
in the "Cohesion" in Mohr-Coulomb i put the Cohesion yield stress = 200 psi and Abs. plastic strain =0. I expect to see elastic-perfect plastic stress-strain curve, but i did not see that behavior.
Thanks




