Learning Forum

[Nuwad]

Hello I am relatively new to ANSYS and am having trouble understanding exactly how ANSYS solves static structural models. I think I have a good understanding of what is actually going on but I am not really sure of what the output means.

My main problem is when a simulation fails and throws an error. I do not know how to identify all the elements that are creating an error in-order to try and resolve the issue. From my understanding the output throws only the last element it encountered the error on. How do I see the rest?

[Nuwad]

[peteroznewman]

Here is a Google Search of this site. There are 196 hits on the phrase "highly distorted".
https://www.google.com/search?q=site%3Aforum.ansys.com+%22highly+distorted%22
You will find a common theme among many of these discussions on the corrective action to take.

[Nuwad]

[Nuwad]

Can having certain Licenses effect the convergence of a model? I am still having trouble and now have been running into a situation where the model works on one computer but not on another. I cannot get past the fist sub steps on one computer while the other computer has very little convergence issues. How are the "Force Convergence" and "Force Criterion" graphs generated. Can it be an issue with one computer taking to long to solve an equation or give a incorrect response? I am lost!!!! the models are set up the same and yes there are slight differences in the mesh (node count and such) but why does one solves quickly and the other just doesn't what can I check?

[peteroznewman]

The licenses have no effect on the convergence of a model.
Different computers that have different amount of installed RAM may cause Ansys to choose a different solver when that choice is left as Program Controlled, but if you specify that you want the Direct solver, then there should be no difference between computers other than the time it takes to solve. If a model fails to converge on one computer, the same model will fail to converge on another computer.
Put an image of the Force Convergence graph in your reply. Look at the Solution Output text and find the Error near the end. Put an image of the error in your reply. Is it still highly distorted? Show an image of your Analysis Settings. Is Auto Time Stepping ON? What is your Initial, Minimum and Maximum Substeps? Do you have contact in your model? Do you have a nonlinear material in your model?