Reply To: Which theorem is Ansys using in the background for bending?

[Erik Kostson]

Hi



We can use solid 3D elements (if the model is not too large), or solsh190 elements - it depends if you are looking at only displacement or if you want a very accurate through thickness stress distribution (so stresses perpendicular to the shell surface), or shear distribution then a solid might be needed. Of course if the model is very large (and thin), then using solid 3D elements might be too heavy computationally.

Shell elements might be OK for a global shell model assuming it is not too thick (moderately thick) - see shell181 for more info on our shell elements. SO it all depends, on what we are looking at and are after (results).

--
There are also many discussion on the internet on this:
Also use a search engine and look for a discussion called:
Comparison of ANSYS elements SHELL181 and SOLSH190

This will give some good guidelines on what to use and what to watch out for.
All the best

Erik