Learning Forum

[naousdaniella]

When I click solve for the topology optimization, it does nothing and only shows an error stating:  "The nonlinearity exists in the analysis. If the Topology Optimization solution is performed and convergence is met, then please check to see if the solution is acceptable.  

Can you please help me solve this problem. 

 

Thank you in advance

[peteroznewman]

In the first image, I see errors that say the file is in use by another process.  I suggest you make a new folder on the C: drive called C:ansysdata

Save the project into that folder, then try to solve.  The files in this folder will not be accessed by any other process.

 

[naousdaniella]

Thank you for your response.

I did what you told me but I still keep on getting the same error message about the nonlinaerity existing in analysis

[peteroznewman]

That is a warning message, not an error message.

Topology Optimization works well on linear models. It may not be stable on nonlinear models. Therefore, if the Topology Optimization converged, you must check your results carefully to see if you think it has found a valid optimum.

[naousdaniella]

 

Thank you. but I can see the analyses results but TO does not converge at all.
These are the material properties that I have used. And I have another warning as well. Perhaps this can lead to a solution

[naousdaniella]

When I try to import the geometry to Ansys 19.2 instead of R3 it gives me this error 

One or more objects may have lost some scoping attachments during the geometry update. You can identify these tree objects by filtering the tree using the Scoping option set to Partial.

 

[Benjamin Huff]

 

I am having the same issue. Everything looks good to me in mine, but solution doesn’t converge. It’ll throw up the non linearity warning and won’t solve.

All load cases are copies of each other but the moment load is applied to the adjacent surfaces. Material is17-4 h1100 for all bodies.

[Chris Miller]

I have found that if you have friction in your model [a nonlinearity] that the TO algorithm may not function.  Try simplifying your contacts if you have friction ...maybe by bonding.