Triphasic Material - Confined Compression

Hi,

I have been using Comsol for 2 years now, for the past few weeks I have been trying to implement a mechano-electrochemical model, also know as the triphasic model to study the effects of mechanical loading on a charged soft tissue.

has anyone ever attempted to solve this particular problem before ?

I am having troubles with the implementation of the boundary conditions, if anyone has any suggestions or could help me out it would be great