Description
The command is used to assign properties to a part or to a range of parts.
Surface smoothing is applied if the angle between the normal vectors of two
adjacent higher order external faces is smaller than $\alpha_\mathrm{max}$.
Part commands can be assigned a title. The title shows up in part.out and in the part list
in IMPETUS Afea Solver GUI.
An element is eroded if its critical time step drops below $\Delta t^{erode}$,
if the effective deviatoric geometrical strain $\epsilon_{geo}$ reaches $\epsilon_{geo}^{erode}$ in
at least one integration point, or if the volumetric strain exceeds $\epsilon_v^{erode}$.
The effective deviatoric geometric strain is defined as:
$\displaystyle{ \epsilon_{geo} = \sqrt{ \frac{2}{3} \mathbf{\epsilon}_{dev} : \mathbf{\epsilon}_{dev} }}$
where $\mathbf{\epsilon}_{dev}$ is the deviatoric strain tensor.
Note that elements can also be eroded at material failure if setting the erosion flag to 1 in
the damage property command.
