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PROP_DAMAGE_CL_EXTENDED

Material properties

*PROP_DAMAGE_CL_EXTENDED
"Optional title"
did, erode, noic
$W_c$, $\phi$, $\gamma$

Parameter definition

Variable
Description
did
Unique damage identification number
erode
Element erosion flag
options:
0 $\rightarrow$ failed element is not eroded
1 $\rightarrow$ failed element is eroded
2 $\rightarrow$ node splitting at failure (crack plane orthogonal to max principal strain)
3 $\rightarrow$ node splitting at failure (crack plane orthogonal max principal stress)
noic
Flag to turn off cracking along interface between different materials
options:
0 $\rightarrow$ material interface cracks are allowed
1 $\rightarrow$ material interface cracks are not allowed
$W_c$
Damage parameter
$\phi$
Damage parameter
$\gamma$
Damage parameter

Description

This is the extended Cockcroft-Latham failure criterion. Damage is defined as:

$\displaystyle{D = \frac{1}{W_c} \int_0^{\varepsilon_{eff}^p} \sigma_{eff} \cdot \left(\frac{\mathrm{max}(0,\sigma_1)}{\sigma_{eff}} + (1 - \phi)\cdot \left(\frac{\sigma_1 - \sigma_3}{\sigma_{eff}}\right)\right)^\gamma \mathrm{d}\varepsilon_{eff}^p}$

$\varepsilon_{eff}^p$ is the effective plastic strain, $\sigma_{eff}$ is the effective stress and $\sigma_1$/$\sigma_3$ is the maximum/minimum principal stress.