Hi,
I am trying to simulate diffusion of a solute from a biodegradable porous matrix into an external bath. One of the requirements of my model is that the material degrades with respect to time i.e pore size increases as a result of the material degrading. I am aware of the fact that the solid volume fraction (SVF) has no effect on a biphasic simulation that uses constant permeability, so am I right in saying that I need to introduce the varying function to the permeability property of the model in order to achieve variable SVF? (Essentially, I want to make the permeability dependent on the SVF and make the SVF dependent on time)
As far as I can tell, the permeability materials offered in FE Bio are all strain-dependent materials via Holmes-Mow relationship using the Jacobian, J. So I am not sure how I can model degradation of the material that experiences increasing pore size and insignificant deformation. I would really appreciate any advice on this!
Thanks,
Peter
I am trying to simulate diffusion of a solute from a biodegradable porous matrix into an external bath. One of the requirements of my model is that the material degrades with respect to time i.e pore size increases as a result of the material degrading. I am aware of the fact that the solid volume fraction (SVF) has no effect on a biphasic simulation that uses constant permeability, so am I right in saying that I need to introduce the varying function to the permeability property of the model in order to achieve variable SVF? (Essentially, I want to make the permeability dependent on the SVF and make the SVF dependent on time)
As far as I can tell, the permeability materials offered in FE Bio are all strain-dependent materials via Holmes-Mow relationship using the Jacobian, J. So I am not sure how I can model degradation of the material that experiences increasing pore size and insignificant deformation. I would really appreciate any advice on this!
Thanks,
Peter
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