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Plane Strain in Optistruct

Hi, how can I make the configuration for flat tension in optistruct? there is a file for this but I can't get it to run correctly. https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/analysis_of_pressure_vessel_problem_r.htm

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HyperMesh

OptiStruct

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RobinsonFerrari

Hi Santiago,

Which version are you using?
Please try using the latest release v2022.1.

You can find attached the results files as well.

Let me know if it works for you.

Thank you,

Pressure_Vessel_LS.7z

Santiago Londoño

Hi Santiago,

Which version are you using?
Please try using the latest release v2022.1.

You can find attached the results files as well.

Let me know if it works for you.

Thank you,

Thank you very much Robinson, I am using the latest version, sorry for the inconvenience, how can I open the file you attached in the program?

Thank you very much

RobinsonFerrari

Thank you very much Robinson, I am using the latest version, sorry for the inconvenience, how can I open the file you attached in the program?

Thank you very much

Hi Santiago,

Please take a look at this playlist here on Altair How-To Youtube Channel:
https://www.youtube.com/playlist?list=PLGNemB0NFb0DK40P7FQUyG-6OlvKS5kcm

If this works for you, please consider marking the answer as correct to help others. Otherwise, let me know how I can help you.

Thank you

Santiago Londoño

Hi Santiago,

Please take a look at this playlist here on Altair How-To Youtube Channel:
https://www.youtube.com/playlist?list=PLGNemB0NFb0DK40P7FQUyG-6OlvKS5kcm

If this works for you, please consider marking the answer as correct to help others. Otherwise, let me know how I can help you.

Thank you

Hi Robinson
Thank you very much but it does not work, I need to know where I find the CQPSTN function that is the flat tension, because when I make my model I can not do the analysis I need, because when I do it I get the error 14. I attach the model and the . out file.

2.hm

2.out

Santiago Londoño

Hi Robinson
Thank you very much but it does not work, I need to know where I find the CQPSTN function that is the flat tension, because when I make my model I can not do the analysis I need, because when I do it I get the error 14. I attach the model and the . out file.

Sorry, my mistake, it's plane strain, not flat tension

RobinsonFerrari

Hi Robinson
Thank you very much but it does not work, I need to know where I find the CQPSTN function that is the flat tension, because when I make my model I can not do the analysis I need, because when I do it I get the error 14. I attach the model and the . out file.

Hello Santiago,

In an HM session, go to 2D panel, elem types, 2d&3D, and change CTRIA3 and CQUAD4 to CTPSTN/CQPSTN respectively. Select all elements and click update.
Now you will use the correct elements for plane strain.
Also, define PPLANE for the property instead of PSHEAR.

Thank you very much, and please consider marking the answer as correct if this works for you.

Thank you very much,