Dear All,

I made a 2D model where I injected fluid into a porous cohesive layer and as shown in the picture it expands and generate a blister of fluid as expected (simulation converge). However when I increased the injection rate from 3mm^3/s to 5mm^3/s I obtained a distrotion of the solid elements (CPE4H) which cause a stop of the simulation. Do you have any suggestion on what can cause it? I expect it can be related to the mesh density in the solid elements. Second image is when the error is generated, and you can see the distortion of the elements.

Thank you

Abaqus ​​​​​​​