Hi
Does anyone use COSMOS for analysis of sheet metal parts?
If so do you find it gives reliable results? I am aware (butdon't really understand) that with FEA on items that have largedisplacements there can be issues with meshing and this wouldpossibly applied to sheet metal.
Many thanks
Michael
Depending on your version of Cosmos, large displacements will be misleading. For large displacement analysis you need the non-linear package. For the linear package the stiffness is calculated based on the initial geometry. For small displacements this is adequate. As the deformation gets large, the stiffness changes and the non-linear package is needed to re-calculate the stiffness of the deformed shape.
I hope this helps.