zone.force.update

Syntax

i := zone.force.update()

Flags the cycling logic so that a geometry update is performed at the start of the next cycle. Normally this update is performed at the start of cycling, and in large-strain mode at the geometry update interval. Changes to gridpoint mass and gravity caused by density and stiffness changes may not actually affect the calculation unless an update is performed. The return value is ignored.

Returns: i - the integer 0