TOPTGLBDMETHOD

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

1 - The maximum von Mises stress is approximated by P-norm of all stresses in a region. The global stress value can be different from the maximum von Mises stress.

2 - The maximum von Mises stress is approximated by an exponential function of all stresses in a region. The global stress value can be different from the maximum von Mises stress.

3 - Same as option 1, but the global stress is scaled to match with the maximum von Mises stress. The global stress value is identical to the maximum von Mises stress.

1 ≤ Integer ≤ 3

3