Bulk Data Entry Defines the initial material fraction.


Parameter Values Description
MATINIT Real between 0.0 and 1.0, or ANALYSIS For Topology and Free-Size optimization runs with mass as the objective, default is 0.9. For runs with constrained mass, the default is reset to the constraint value. If mass is not the objective function and is not constrained, the default is 0.6.
Initializes the design with the thickness matching the corresponding analysis result, in case of free-size optimization.

The MATINIT continuation line on the DTPL or DSIZE Bulk Data Entries take precedence over DOPTPRM,MATINIT.