Hello all,

I am simulating cone penetration tests in soils by using static step. I have friction on the cone-soil interface using penalty. But I am having Severe Discontinuity Iteration Issue (SDI) because several nodes states are changed between stick and slipping. I tried automatic stabilization and modified elastic slip to a big value. But none of them can work. What else can I try? Thank you very much for your suggestions!

Cheers,

Xingyi.

Abaqus ​​​​​​​