Dear Parvaneh

I think you have to follow the Analysis Guide that found in ANSYS Help

Thanks

Dear Parvaneh,

Below please find a few links to get access to information related to element birth and death. Hope that helps.

https://www.sharcnet.ca/Software/Ansys/16.2.3/en-us/help/ans_adv/Hlp_G_ADV6.html

https://www.youtube.com/watch?v=Ym2ICuaqgCM

https://www.simutechgroup.com/tips-and-tricks/fea-articles/339-fea-tips-tricks-ansys-ekill-element-death

Thanks for your attention.

I have read this resources that you shared with me, consequently, I wrote the code that posted two days ago.since yesterday, I have read the recommended resources again. But I do not have any new idea yet.

Could you guide me in specific details?

I would appreciate it.

Thank you

My guess is that you kill the element and bring it to live in same time step and for that reason your code doesn't work. If you want to kill the element and bring it to live or vise versa, you need at least two time steps in which you can define a few substeps under each of them. that should get you started.

Thank you so much.

you gave me a valuable hint.