sloshing tank problem with solid structure

Hi all,
I was trying several to do the "sloshing_tank" model with container which is elastic material.
when I add the container with the sloshing_tank geometry, the free fluid surface did not show- as seen in sloshing_tank model.
And also want to show the deformation of the structure.

An error occurring during study2 [ale+spf+solid] computing that "repeated error test failures.May have reached singularity".
Is there any tricky way for taking time step?

I had tried this model with fsi also but the problem remained.


please help me.

Cheers,
Jorden