Hi

Take a look here. We have debated this subject before.

https://www.researchgate.net/post/How_can_i_define_Absorbing_boundary_in_ABAQUS_EXPLICIT

https://www.researchgate.net/post/Anyone_familiar_with_dashpot_in_abaqus

Perhaps I should add that for acoustics, Abaqus has semi-infinte elements that do the job, for a 1-D structure you can use impedance conditions and for soils you need to work quite a but more, see the above.

Hope this helps

Claes

Please look at the infinite elements in ABAQUS. Section 3.3 in the given link.

http://129.97.46.200:2080/v6.13/books/stm/default.htm

 thanks and I appreciate your replay  

Nice greeting,

I am trying to simulate a pavement layers, but I could not figure out how could generate the absorbing boundary condition by using acoustic element.... could you please explain me the steps to understand because I am a new user ABAQUS? I appreciate any assistance....

Thanks in advance

Hi

Acoustic ininite elements support only acoustic (p-waves) while soils carry also many other wave types.

Therefore, truly anechoic boundary conditions for soils require a full blown coupling matrix and data from, e.g. an analytic soild model.

This was discussed in previous discussions on ResearchGate.

/Claes

Nice Greeting 

I got an error "Infinite element must share a complete face of one and only one other non-infinite element" ..... could you please assist me to figure out why I got that error??...I appreciate any advice...

Thanks in advance 

Hi 

I advice you to see these documents. You will find what you need.

Best regards

http://abaqus-users.1086179.n5.nabble.com/How-to-simulate-Absorbing-Boundary-Conditions-for-Seismic-Analysis-in-ABAQUS-td20898.html

https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CDcQFjACahUKEwigm6SqzMTIAhXCWxoKHb-uDWY&url=http%3A%2F%2Fwww.simulia.com%2Fdownload%2Fsolutions%2Farchitecture_cust%2520references%2Farchitecture_absorbing_auc06_babtie.pdf&usg=AFQjCNE12f0CAy1VgUq2z-56chrzfv04Sg&sig2=HPm9n9BeO5tcM6cMMM0rig&bvm=bv.105039540,d.d2s