Linearized Mohr coulomb criteria

Input(s)

$C_{o}$: Unconfined Compressive Strength of Rock (psi)

$\mu$: Slope of Failure Line (dimensionless)

$\sigma_{c}$: Minimum Effective Principal Stress (psi)

Output(s)

$\sigma_{1}$: Maximum Effective Principal Stress (psi)

Formula(s)

$$ \sigma 1=\left(C_{o}\right)+\left(\left(\mu^{2}+1\right)^{0.5}+\mu\right)^{2} * \sigma_{c} $$

Reference(s)

Mark D. Zoback, Reservoir Geomechanics, Cambridge University Press, UK, Page: 93.