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#26 2019-10-11 07:32:31

dezsit
Member
Registered: 2012-06-27
Posts: 60
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Re: Differences in Von Mises Stresses

Hi,

of course if the basis (GP results) are the same, then your averaged nodal values have to be the same (more or less, depending on your post processing software)

The problem is nastran specific, which uses element centroid for averaging by default, while other solvers (eg. ansys, abaqus and aster as well), using extrapolated element nodal results.

To achieve the same averaged results you have two options:
1) change your nastran setup (POST and STRESS case commands as far as I remember) to print out element nodal values and use these results in your postprocessing software for averaging

2) use the method mentioned above to create cell averaged GP results in paravis (= element centroid), then use Cell data to Point data filter to get averaged nodal values from that. It should be the same (more or less) as the ones on picture nastran_vmises_averaged

BR
dezsit

Last edited by dezsit (2019-10-11 07:37:15)

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#27 2019-10-11 19:27:35

astercode
Member
Registered: 2019-06-15
Posts: 29

Re: Differences in Von Mises Stresses

Hi dezsit,

I confirm that in this way also the averages stresses on nodes agree.
Wonderful!

Congratulations to all of you for sharing so much!
Thanks

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