I am doing master's in geotechnical engineering specially in pipe soil interaction. I am new in Abaqus and trying to do Abaqus modeling on pipe soil interaction in horizontal oblique direction. The pipe oblique angle is 10 degree in my recent model. I am pulling the soil in negative-z direction. I am using structured meshing using local seeding. Soil domain size is (4m*2m*1.225m). Steel pipe with 114.3 mm diameter. I am doing the meshing in inclined direction as my pipe is installed in 10 degree angle in the soil domain. Also, I am using general contact.

When I am running my problem it gives me some error and warning.

The error message:

Such as "Time increment required is less than the minimum specified"

"Too many attempts made for this increment"

Warning message:

"Convergence judged unlikely. Increment will be attempted again with a time increment of 2.44997e-04"

What does it means and how can I solve the problem? I have attached the necessary files here.

I need the your kind response which will be greatly appreciated.