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.

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

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.

iam working on same target can you help me