<POROUS_CRITERION> cam_clay

Description

This criterion is developed to study the porous behavior of clay. In literature, many modified versions of cam-clay models have been developed recently to study the behavior of partially saturated soils. Zmat currently includes the basic Cam-Clay model.

\[\frac{3J_2}{m^2} + \left( I_1/3 + p_c \right)^2 -\sigma_\star^2\]

with \(p_c\) and \(m\) coefficients named pc and m.

Syntax

*porous_criterion cam_clay \(~\,\) coefficients \(~\,\) …

Example

A simple example from a test case is given below

*porous_criterion cam_clay
  pc   ft
  100.  0.
  20.   1.
  m     .5