How to define different orthotropic material properties in tension and compression?

Mithra

Hello,

I'm trying to analyze a material which has different material properties in tension and compression. I tried different things but am not able to achieve the same. 

As it's an orthotropic material I need to define these compression and tension data in all three directions. I read about MCIRON card image for concrete which pretty much does the same, but couldn't find it in the software. 

 

Please suggest some steps that I can take here. Thank you in advance.

 

with regards,

Mithra Ramesh

Adriano_Koga

MCIRON allows you to have different tension/compression curves for NL ISOTROPIC material, as an extension of a MAT1 material card.

This other post has an example file. (in japaneses, but the model is there).

https://community.altair.com/community?id=community_question&sys_id=15fab1a6dbbc4990cfd5f6a4e2961939&view_source=searchResult

https://2022.help.altair.com/2022.2/hwsolvers/os/topics/solvers/os/mciron_bulk_r.htm?zoom_highlight=mciron

 

For orthotropic material I believe you would need to create a material model, and user material by coupling OptiStruct with MultiScale Designer. There you would be able to design and characterize your material in tension and compression, including non-isotropic behavior.