Learning Forum

[Md_Salem]

Hello evryone,

I am using  MOGA (Multi-Objective Genetic Algorithm) optimizer offered by Workbench 22R1, is it any relation between number of parameters to be optimized and the  number of samples per generation ? is it any charts that can help giving the lowest number of samples with best convergence built on that criteria ?

 Regards,

[Nanda]

Hello Salem,

In the ansys help manual, there is a general recommendation for the initial amount of samples to use. This quantity must be higher than the total number of input parameters that are active. Ten times the total number of permitted input parameters is the minimum suggested number of first samples. Your odds of locating the input parameter space containing the best solutions increase with the size of the initial sample set.

For more information on using MOGA optimization, have a look at these links.

Multi-Objective Genetic Algorithm (MOGA) (ansys.com)

Performing a MOGA Optimization (ansys.com)

Thanks and Regards,

Nanda.

Guidelines for Posting on Ansys Learning Forum

How to access ANSYS help links

 

[Sheref haddad]

Hi @Nanda

I am doing structural MOGA optimization in ANSYS workbench for deflection at various harmonic frequencies. Is it feasible to assign a weight to each frequency response throughout the optimization process? In other words, how might particular frequencies' responses be emphazised more than others?

Sheref

 

[Dragana Jandric]

Hi Sheref,

There is no option under MOGA optimization to give weight to a certain parameter in a way to emphazised it more than others. The options for Objectives and Constrains are below, we can't say one is more important then the other. 

[Sheref haddad]

Hi Dragana,

excuse me , but I have aproblem with my account, I cannot place any posts. when ?I try to place a new post on "My posts\My forum" , I have the page shown in  pic 1 with no response

and don't respond to my left click on "new post". And when I try to right-click, then "open in new tab" the response becomes like shown in pic 2, is it any way to restore my account? Sorry again for the interruption; it is my only way to communicate with you right now.

Regards