Hi everyone and Thanks for reading the post.
My hand calculation and FEA did not match at all for a new model I am working on it.
Therefore, I created a very simple model to make FEA verification. Surprisingly, the results did not match at all.
Please see the attached file for the details of the verification, I am doing.
The problem is very simple: It is a tube under pure torsion.
Solidworks results are much higher than theoretical expected values.
Can anyone explain the reasons of this discrepancy please?

Thanks for the help,
Zinov

• http://files.engineering.com/getfile.aspx?folder=177bd949-e663-4d58-80b7-36

You're looking at the von Mises stress while calculating the basic torsional shear. You need to define a radial shear stress plot or you could also look at the first principal stress.

Thanks Rumandcola, can you please give me more details on how to do it?
Any reference, that can help, will be appreciated.
Thanks,
Zinov

You just need to make a new plot.
Right click the results folder and select "Define stress plot".

If you do a 1:st pricinpal stress plot i think that you will be very close to calculated 95,45 MPa

Thanks mmar, it works, I am@95.6MPa with the new plot.
Thanks for the help,
Zinov