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.

3 Comments
  1. Hans Henning Stutz
    Hans Henning Stutz 4 months 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
    https://www.sciencedirect.com/science/article/pii/S0267726118304718

    Best regards,
    Hans Henning

  2. Ruibin Hou Author
    Ruibin Hou 4 months 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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