f := zone.vol(z)

Get the zone volume calculated using the current position of the zone’s gridpoints.

Recall that in a large-strain analysis, gridpoint positions are updated. In a small-strain analysis, gridpoint positions are not updated. This FISH intrinsic will return the zone volume of an undeformed zone when used in a small-strain analysis. In small-strain, to obtain zone volume that takes into account accumulated gridpoint displacements, use FISH intrinsic zone.vol.deformed.

Returns:f - the current zone volume
Arguments:z - a zone pointer