Non-average Stress @ Top & Bottom Planes of Shell Elements about pymapdl HOT 8 CLOSED

Can you email me at [email protected]?

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I'll work on this as soon as I get the rst file. Please include a text output of the results that you'd like me to achieve like in #17.

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Thank you. I will send you the ANSYS rst file and the expected text output shortly. I am working on it.

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Alex,

I emailed you the ANSYS rst file (v18.2) and the expected outputs.

Please let me know if you need any other info from me.

Thanks,
-Shobeir

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Results for SHELL181 elements now match ANSYS output in both the element coordinate system and the global coordinate system. Updated in 0.32.4. See the documentation for ElementStress.

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Alex,

Thanks for the update. This is really a good improvement. I removed the previous version and downloaded the updated 0.32.4. version and successfully reinstalled it through Anaconda distributor by using "pip install pyansys" command. However, I am still getting the previous results (mid-plane stress) and not the top and bottom surface stresses. Here is what I have

import numpy as np
import pyansys
result=pyansys.ResultReader('Test.rst')
estress, elem, enode= result.ElementStress(0,False)

When I try to change the coordinate system by typing
estress, elem, enode= result.ElementStress(0,False,True)

I get the following error:
TypeError: ElementStress() takes from 2 to 3 positional arguments but 4 were given

It seems that my pyansys has not been updated. Am I missing anything here?

Thanks,
-Shobeir

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Alex,

Never mind about my previous comment. I resolved the installation issue.

Every thing works perfect now. Thank you so much.

Just a couple of suggestions for future considerations:

(1) Might be good to include an option to extract the stresses for certain element numbers and not for all the available elements.

(2) I guess the updated version works fine for all Shell elements and not only for Shell 181, is this correct? I can test it and let you know.

Thanks again.
Best,
-Shobeir

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You can create a mask or loop through specific elements if you’d like only the stresses of those elements. I suppose there would be a speed up if you only wanted the stress of certain elements. If it’s critical, let me know.

I only programmed it for SHELL181. If you send me a rst file with a different shell type I can add it to the source. I’d sure it won’t be much code on my side, but I like to have tests to support code and I don’t usually work with shells.

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