Hello,

I am looking for any nonlinear FEA software available that can dynamically analyze movement of a biphasic (porous solid saturated with liquid) tissue. We are trying to get a dynamic model of vocal fold vibration. I am wondering if Solidworks would be able to model such tissue. A lot of FEA software has biphasic material analysis and dynamic analysis separately, but I have not found any software yet that can dynamically analyze biphasic tissue. We would like a poroviscoelastic biphasic model that is able to describe some or all of the following: liquid motion, solid stress fields, solid-liquid interaction, continuity and momentum equations that describe momentum exchange between the liquid and solid components of the vocal fold tissue.

Thank You for any input,

Anton Kvit

Ansys has coupled fluid structure interaction in ansys multiphysics wherein it integrates its results from ansys CFX flow package with deflection results from a static nonlinear analysis. Each increment of the stiffness matrix is solved and handed over to the fluid package for iteration of fluid regime. In turn, the reaction forces are evaluated to match up with the fluid kinetics and handed back over to the nonlinear solver to use as new boundary conditions for solid structure deformations. That completes the loop. Many loops later you have a progression of fluid structure interaction. I don't think you will find this in a bargain code like flowsim/sim premium.