TOPTGLBSMETHOD

Description Type Default

Topology design optimization boundary threshold used to export a Nastran Bulk Data file of the final optimized design. Elements with densities below this value will not be exported along with their associated grid points.

Global displacement constraint method for topology design optimization. There are three options:

1 - The maximum displacement is approximated by P-norm of all displacements in a region. The global displacement value can be different from the maximum displacement.

2 - The maximum displacement is approximated by an exponential function of all displacements in a region. The global displacement value can be different from the maximum displacement.

3 - The maximum displacement is used as it is without approximation. The grid of maximum displacement might change during optimization iteration. The global displacement value is identical to the maximum displacement.

1 ≤ Integer ≤ 3

3