DOPTPRM, MATINIT

Bulk Data Entry Defines the initial material fraction.

Definitions

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. ANALYSIS 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.

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.

ANALYSIS: 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.