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.

$$\sigma=\begin{bmatrix}\sigma_1&0&0&0&0&0\end{bmatrix},$$

meaning that the elastic strain $\varepsilon^e$ is always

$$\varepsilon^e=\varepsilon_1^e\begin{bmatrix}1&-\nu&-\nu&0&0&0\end{bmatrix},$$

where $u$ is Poisson's ratio.

Recording

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

variable label	physical meaning
VF	volume fraction