I know about mesh density, skewness, wrap angles, and aspect ratio.
Per literature, aspect ratio is a quick tool to define quality of mesh.
Is there a rule of thumb for acceptable values of elements aspect ratio?
in ansys workbench for static analysis, ERROR response show the released energy between proximity elements, so if your error response is minimum, your mesh, so your mesh quality is good and then your other response have accuracy
Mr.Ahmed,
The acceptable values of elements aspect ratio is one for getting better accuracy of results. Then, the mesh density and size is to be decided based on type of problem analysed and loading details..If you have chosen aspect ratio one but mesh size and density is not sufficient to capture the response then the end results may not converge with exact solution..mean that the accuracy of results is depending on the element aspect ratio, mesh size and density ..ok all the best in your research..
in ansys workbench for static analysis, ERROR response show the released energy between proximity elements, so if your error response is minimum, your mesh, so your mesh quality is good and then your other response have accuracy
Not really, because what is acceptable depends on the desired precision. It also depends on things like element type, for example, incompatible mode elements perform a lot worse when distorted; fully-integrated quadratic elements may be worse than reduced once if strongly distorted because the volume at the integration points may be small.
A very loose rule of thumb is that you should avoid angles smaller than 30 degrees or so. Abaqus can show such elements in the mesh module.
Thank you all very much.
I got the Point Prof. Pedrazzi. Many thanks.
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