(preferably a software with the ability to model soil-structure interaction)
What approach do you need - direct or substructure (for SSI)? If you need complex direct modelling I would definetely say LS-DYNA. If you are concetrated on the soil only you may try FLAC.
you can use a proper constitutive model such as Finn model in FLAC and FLAC3D software or UBC-sand in GTS-NX and PLAXIS3D (not PLAXIS2D) software.
According to the research that I've done before, I suggest you to use UBC-Sand model in FLAC2D or 3D. In this case you will have good results.
Dear Rouhollah Basirat
Could you please tell me how can I import those models into PLAXIS 3D?
In the Plaxis 3D software (after 2012), a constitutive model entitle UCB-sand is added to this software for analyzing of liquefaction phenomena.
Your welcom!
Please just if you find it (PLAXIS3D) in Iran, inform me!
I have not worked with FLAC so much. By the way, I am not sure of its capability for structural modeling (such as foundation analysis).
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