Hello everyone,

I am trying to set up a 3D model with acoustic infinite elements along the boundaries. To accomplish this I have taken the following steps:

1. create a 3D part. 2. create a material that has acoustic medium property. 3. create a section that is acoustic infinite. 4. assign a section to the part. The problem is in step 4: I cannot see the acoustic infinite section I created. Do you know how can I fix this?. I thank you very much for any help in advance.