Shell Elements are not readable

[abhijeet-pandey]

Hi Alex,

Pyansys currently ignores SHELL elements from the .RST file.

Regards,
Abhi

[akaszynski]

Could you please attach the result file and/or specify which shell element are being ignored? I've been able to read in SURF154 elements with no problems.

[abhijeet-pandey]

Thanks for your response. I am trying to plot nodal stress results with a model that contains shell181 elements. Rest of the element do get plotted fine, while the shell elements are completely ignored. I am using Ansys v.18.2 Do let me know if you are able to replicate the issue. Regards, Abhi On 27 Feb. 2018 6:06 pm, "Alex Kaszynski" <notifications@github.com> wrote: Could you please attach the result file and/or specify which shell element are being ignored? I've been able to read in SURF154 elements with no problems. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#15 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXa6Vw9V_mvNnSIvDppj3AsBlEjv63e6ks5tY7eegaJpZM4SQU6H> .

[akaszynski]

I've yet to program an interface for SHELL181, but as the element ordering is the same as SURF154, it shouldn't be too hard to add. I'll update the code so that those elements are accessible to pyansys as well.

[abhijeet-pandey]

Thanks mate! I suggest that you target the default element types used by Ansys WB (for 1D,2D,3D). This would increase the reach of pyansys. If you could throw some light if in the future, with respect to nodal results, you would be giving access to: the averaged, unaveraged on material, unaveraged on real constant, top/bottom solution option for shell elements. This would be very useful indeed. Regards, Abhi

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On 28 Feb. 2018 8:47 pm, "Alex Kaszynski" ***@***.***> wrote: I've yet to program an interface for SHELL181, but as the element ordering is the same as SURF154, it shouldn't be too hard to add. I'll update the code so that those elements are accessible to pyansys as well. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#15 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXa6VwMw8Q8srTwgEEeAZM8WsOW5qJ4pks5tZS7CgaJpZM4SQU6H> .

[akaszynski]

I'm about ready to go for SHELL181, but it would be great to have an APDL script to run and compare against. Do you have one?

[akaszynski]

pyansys now reads SHELL181.

Could you let me know what the default elements are for workbench? I don't usually use workbench.

[akaszynski]

Closing soon unless I hear back.

[abhijeet-pandey]

Sorry for the delay. I will send the default elements for workbench today.

…

-Abhi

On 7 Mar. 2018 10:12 pm, "Alex Kaszynski" ***@***.***> wrote: Closing soon unless I hear back. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#15 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXa6V4uNygIkNpmjI62E5Hks1UuGCPhDks5tb86agaJpZM4SQU6H> .

[abhijeet-pandey]

Hi Alex, Here is a list of common first and second order elements used by WB for structural analysis: 1D: BEAM188 COMBIN14 2D: SHELL181 SHELL281 CONT174 TARG170 3D: SOLID185 SOLID186 SOLID187 Regards, Abhi On 8 Mar. 2018 6:42 am, "Abhijeet Pandey" <pandeyabhijeetenator@gmail.com> wrote:

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Sorry for the delay. I will send the default elements for workbench today. -Abhi On 7 Mar. 2018 10:12 pm, "Alex Kaszynski" ***@***.***> wrote: > Closing soon unless I hear back. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#15 (comment)>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AXa6V4uNygIkNpmjI62E5Hks1UuGCPhDks5tb86agaJpZM4SQU6H> > . >

[akaszynski]

Thanks! Let me know if you can read in shell elements now. I tested it on:
http://pyansys.readthedocs.io/en/latest/ansys_examples.html#spotweld-shell181-example

I'd like to know if it works for you as well.

[abhijeet-pandey]

Hello Mate,

Sorry for the late response. I tried out the spot weld example with Shell elements. The results from pyansys come close to the middle layer results (using SHELL command) for the shell from Ansys results.
Also there are options(AVRES, EFACET, AVPRIN command) in Ansys (last image) for if the user wanted to average across different thicknesses and materials. I am not sure how pyansys is taking care of this as each option would result in a significantly different plot.

Regards,
Abhi