Hello:

I have been working on proppant transport and hydraulic fracturing in Abaqus for very long, but so far I have only dealt with 2D models, with z-direction being absent. Although, I have applied an S33 compresive stress in the z-direction (like the overburden stress), but there is no simulation or discretization in the z-direction.

But now there is! I am now dealing with 3D model, where the meshing is pretty much the same, except for far more elements. I have attached a picture of my model.

The problem I am facing is that my *GEOSTATIC step is not getting completed. All the displacement changes are achieving equilibrium, but the pressure changes far exceeds equilibrium. I have attached the *.msg message file, where from the very beginning, the correction to pore pressure, at any particular node, is very large!!! Unless, this value goes very low, the *GEOSTATIC step will keep getting aborted!!! What can I do to solve this issue? i have attached the *.inp file as well!!!

Please help me!

Thank you very much,

Mousumi