cosmosexpress stress analysis software for accuracy

[mechwarior]

Hello,
Does anyone have any problems with cosmosexpress
stress analysis software for accuracy.?

I ran a simple stress analysis on a round solid
rod with applied pressure at 5000 psi on one end and
fully supported at the other end. So the maximum
stress should be the same as applied pressure but the max. stress according to
cosmosexpress was 6800 psi.

So something is not right, I may be missing some setting I don't know about or
the software??

If anyone know the answer to this, please let me

 

[proinwv2]

Was the rod long enough to experience column stresses? If it is not very, very short, there may well be additional stresses. Consider the conditions for a column.

(I attended a brief lecture by professors from a local engineering school and they suggested that the best FEA software required experience, and judgement, to use and they always recommend making an estimate of the results with "hand" calcs. But the assumptions used must be correct.)



Paul Ostand

http://www.ostand.com