Learning Forum

[ozdmrdnz]

Hello everyone,

I was trying to modelled sandwich panel composite beam for three point bending test but I dont know which theorem is ansys using for background by the way I am trying to find total displacement . Also should I modelled my composite face solid or sheel which one is the more accurate ? or should I modelled my core for solid and the other faces for sheel ?

Best Regards

[ozdmrdnz]

[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).

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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

[ozdmrdnz]

Thank you for all kindly recommandation Erik It was very useful
Best Regards