Hello, everyone

I am an abaqus user and developer. Recently, I want to simulating the liquefaction phenomenon with abaqus/standard or abaqus/explicit. As I know, this cannot be realized using the internal program because solution of the u-p formulation is not supported. Does that mean I have to write an UEL or VUEL program to solve it ? As the postprocessing of UEL/VUEL is unconvenient, is there other simple way to solve this problem? like using umat or vumat subroutine. Any advice would be greatly appreciated.

  1. Hans Henning Stutz
    Hans Henning Stutz 2 years ago

    Dear Ruibin,

    I did not have much experience with this kind of problems, but so far as I know. You have to code your own element formulation u-p or u-p-u.
    An example of such an approach can be found in:
    J. Machaček, Th. Triantafyllidis and P. Staubach, Fully coupled simulation of an opencast mine subjected to earthquake loading, Soil Dynamics and Earthquake Engineering, 115:853-867, 2018

    Best regards,
    Hans Henning

  2. Ruibin Hou Author
    Ruibin Hou 2 years ago

    Dear Hans,
    Thanks for your reply. It seems uel is necessary to solve this problem. However, the following paper shows a simple method which simulating soil as a two phase material in dynamic analysis. https://onlinelibrary.wiley.com/doi/abs/10.1002/gete.201200018 Unfortunately, I still cannot figure it out at this time.

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