NonlinearGurson1D

Uniaxial Nonlinear General Gurson Porous Model

Theory

The yield function, hardening rule, flow rule are identical to that of the 3D version. Please check the ** NonlinearGurson** model for details.

The uniaxial version assumes the stress tensor possesses the following voigt form.

$$\sigma =\left[\begin{array}{cccccc}{\sigma }_1& 0& 0& 0& 0& 0\end{array}\right],$$

meaning that the elastic strain ${\epsilon }^e$ is always

$${\epsilon }^e={\epsilon }_1^e\left[\begin{array}{cccccc}1& -\nu & -\nu & 0& 0& 0\end{array}\right],$$

where $\nu$ is Poisson's ratio.

Recording

This model supports the following additional history variables to be recorded.

variable label	physical meaning
VF	volume fraction