How to model infinite part for axisymmetric elements in Abaqus?

[kumara123]

Hi, I am trying to model an infinite boundary for 2D soil media with different layers in Abaqus.
I want to add an infinite part to the axisymmetric elements. I tried that with defining acoustic elements (ACAX4) and then convert into infinite elements (CINPE4) in .inp file. But it was done by a mixture of 2D and axisymmetric elements. Is this ok or can anyone recommend me a method? 
Also, how to assign different material properties to different layers after obtaining the infinite elements (it becomes an orphan mesh part).

Thanks

 

[Mehdi_Hashemi]

Dear kumara123

Hello
I have the same problem as you mentioned. Please help me know if you found the solution of this problem.

Thank you
Mehdi

 

[kumara123]

Dear Mehdi,

I used the same method I explained in the problem and convert the ACAX4 elements into CINAX4 in .inp file.
Is that the answer you want?

Thanks,
Kumara.

 

[Mehdi_Hashemi]

Dear Kumara

Thank you for your help.
I am trying to work with orphan mesh, but I have some problems. Do you have any references about orphan mesh and how it works?

Best regards
Mehdi

 

[kumara123]

Hi Mehdi,

Hope this will help.

https://www.youtube.com/watch?v=CaTd5ppSPA4&index=11&list=WL

https://www.youtube.com/watch?v=T-rla6r1RHg&index=12&list=WL

 

[Mehdi_Hashemi]

Dear Kumara

thanks a lot. I saw these videos and they are great. I have problem with assign different material properties to different layers after obtaining the infinite elements with orphan mesh.

Mehdi

 

[kumara123]

Does the problem relate to grouping elements into different layers or some other problems?