Mohr-Coulomb Failure Criterion

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Equation / Last modified by EmilyB on 2016/08/15 16:40
Mohr-Coulomb Failure Criterion
Variable Instructions Datatype
`(sigma)"normal stress"` Enter normal stress Decimal (Pa)
`(phi)"slope of the failure envelope"` Enter slope of the failure envelope Decimal (rad)
`(c)"intercept of the failure envelope - cohesion"` Enter intercept of the failure envelope - cohesion Decimal
Type
Equation
Category
vCommons
Contents
3 variables
Rating
ID
EmilyB.Mohr-Coulomb Failure Criterion
UUID
54dc8467-6306-11e6-9770-bc764e2038f2

The Mohr-Coulomb Failure Criterion represents the linear envelope that is obtained from a plot of the shear strength of a material versus the applied normal stress.  This relation is expressed: `tau=sigmatanphi+c`, where:

  • `sigma` = normal stress
  • `phi` = slope of the failure envelope
  • `c` = intercept of the failure envelope (cohesion)

References


Wikipedia (https://en.wikipedia.org/wiki/Mohr%E2%80%93Coulomb_theory#Mohr.E2.80.93Coulomb_failure_criterion)