No creep response from poroelastic model

Hello,

I have modeled intervertebral disk (axi-symmetric model) with poroelastic properties in abaqus,

elastic properties is entered in cae and permeability, initial void ratio are included in inp file,

my analysis converge there is no creep response in my model?

i dont know what is the problem but i think i should define a condition that allows the fluid within the model transfer from one segment to another,

Does anyone know how can i define this condition??

Thanks