Mohr-Coulomb failure criterion
= Mohr-Coulomb failure criterion
{c}
{title2=$|\tau|=c+\mu_f\sigma_n'$}
A frictional shear-strength approximation $|\tau|=c+\sigma_n'\tan\varphi$, with <cohesion> $c$ and <internal friction angle> $\varphi$. Effective compression increases shear resistance. A separate tensile cutoff is generally needed at low confinement. The names refer to <Christian Otto Mohr> and <Charles-Augustin de Coulomb>.