I am recently working on the mechanical characteristics of large diameter monopiles under horizontal loads.The numerical simulation part of this project was carried out in ABAQUS/STANDARD and for the modelling we invoked the UMAT of the SANISAND intrinsic model.
From the results file I found that the soils generated very large negative pore pressures, which is clearly not possible in reality. To solve this problem we need to set the cavitation limit for the fluid in the soil in ABAQUS/STANDARD.
I would like to ask for advice on how to set the cavitation limit for pore water in the ABAQUS/STANARD simulation.
Is it can be done through some codes in subroutine, could anyone please tell me about that.
I would be very grateful!