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no force equilibrium obtained

Convergence Problem using Biphasic Material to model hip joint in Abaqus

Dear All,

i am new to this forum and would like say hello to everybody!

I am currently working on a hip joint model consistent mainly
of the cartilogenous tissues. Biphasic Materials consitent of
a linear elastic Matrix and trapped fluid, which i modelled in
abaqus using Soil Mechanics (permeability).

At the moment, however, i am unable to obtain convergence. The
whole calculation stops at ca 0.122 sec out of total 1 sec. I
guess its just one parameter set wrong in Contact or an convergence

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