PROP_DAMAGE_IMP_ISO
Material properties
*PROP_DAMAGE_IMP_ISO
"Optional title"
did, erode, noic
$A_{imp}$, $B_{imp}$, $W_{imp}$
"Optional title"
did, erode, noic
$A_{imp}$, $B_{imp}$, $W_{imp}$
Parameter definition
Variable
Description
did
Unique damage identification number
erode
Element erosion flag
noic
Flag to turn off cracking along interface between different materials
$A_{imp}$
Damage parameter
$B_{imp}$
Damage parameter
$W_{imp}$
Damage parameter
Description
This is the IMPETUS isotropic failure criterion. The material will lose its shear strength pressure once the damage parameter, $D$, has evolved from 0 to 1. The damage is defined as:
$D = \displaystyle{ \frac{1}{W_{imp}} \left[ A_{imp} \int_0^{\varepsilon_{eff}^p} \mathrm{max}(0,\sigma_1) \mathrm{d}\varepsilon_{eff}^p + B_{imp} \sigma_1 \varepsilon_{eff}^p \right]}$
where $\sigma_1$ is the maximum principal stress.
