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I am starting to learn how to use ANSYS APDL. So I don't have much knowledge in the software.

I have modelled a cantilever beam (with beam188 elements) and the only load that i have applied was the self weight.

When I ask for the shear force diagram (element table) and plot the results, the SFD looks like this:

enter image description here

Shouldn't it be linear? What happened?

Wasabi
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Marina Vendl Craveiro
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  • Out of curiosity, what are the units of stress as displayed? The min is -19600, but what units? – do-the-thing-please Mar 31 '16 at 00:57
  • -19600 is the shear force in Newtons! – Marina Vendl Craveiro Apr 01 '16 at 02:36
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    Yes, it should be linear. It's hard to troubleshoot an FE model with a single image though. I'd suggest that you check all boundary conditions, maybe you've accidentally restrained some nodes? if you find nothing, maybe try to rebuild the model in a new file from scratch and see what you get. – William S. Godfrey- S.E. Apr 01 '16 at 14:46
  • I second @WilliamS.Godfrey-S.E. , some DOFs seem missing. Try to plot the deformed structure, and also post the APDL script here, it should only be few lines of code – hdrz Jul 30 '17 at 10:57

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Dear madam , pls make beam with keypoints and then do meshing with mesh tool and use smisc3 and 16 for bending moment and smisc 6 & 19 for shear force

pradeep kumar
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