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Mesh / Stress Convergence Study with Hypermesh

Merula_20758

Hey,

lately someone pointed out the possibility to do automated mesh convergence studies within Ansys workbench.

Example:

Is something similar available for Hypermesh / Optistruct ??

As this is an often executed task I hope to find a way which does not include setting up the mesh entirely new with forces, boundary conditions and such.

Thanks so much in advance for your help.

Best regards,

Merula.

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Altair Forum User

@Merula

I am going to create an RFE for a similar feature.

Merula_20758

That would be awesome!

Altair Forum User

What is RFE?

I am currently doing my project and wanted to carry out convergence on Hypermesh. Any possible solutions would be of great help.

Thank You

Best regards,

Sohanth

Altair Forum User

Hi Sohanth,

If you plan to do a convergence check, consider performing at least one refinement of the model after the first run. If neighboring elements display large differences in stress, the gradient was probably not captured in these areas, therefore some mesh refinement is recommended. In general, increasing the number of nodes improves the accuracy of the results. But at the same time, it increases the solution time and cost. Usual practice is to increase the number of elements and nodes in the areas of high stress (rather than reducing the global element size and remeshing the entire model) and continue until the difference between the two consecutive results is less than 5 to 10%.

I recommend you to go through our free ebook Practical Aspects of Finite Element Simulation (A Study Guide) which covers all these basic aspects.