solver algorithms Topology Optimization

ElineH

Hi

I looked in the documentation but don't succes to make up my mind:

Which are the solver methods used for topology optimization?

I found that solvers used are 

-MFD

-SQP

-DUAL and DUAL2

-BIGOPT

But in the beginning of the user manual Altair also talks about the optimality criteria method but in the manual I can not find anything about it.

Which is the default solver for topology optimization and which others optimization algorithms can be used to solve a topology optimization problem?

Robert Lawson

Hi ElineH - 

In the help for DOPTPRM, note 1 says 'optimization algorithms are automatically selected by OptiStruct based on the optimization type'. 

https://altairhyperworks.com/hwhelp/Altair/2019/help/os/topics/solvers/os/doptprm_optmeth_bulk_r.htm

 

I'm looking at a .out file from a run, and I see no information stating which method it actually used.  Perhaps there's a setting to get more verbose output, but I'm not seeing anything obvious.

 

- Robert