Balance the in-situ stress in CB-GEO

MPM
#1

Hi,
I want to balance the in-situ soil stress under gravity.
But the results are shown in the following figures.

7fb73b3e03aa55ab39325608f6738e4
7fb73b3e03aa55ab39325608f6738e41687×902 136 KB

1654958545394
16549585453941728×918 129 KB

It seems that the practicles at the bottom corners didn’t move verticly. I checked the boundaries conditions for several times but I don’t know what was worng.
Thanks!

#2

I have solved this problem by seting damping cofficient from 0.75 to 0.05. It seems that a great damp cofficient will lead to this problem. Setting a small value works but I don’t know why.