What kind of finite element analysis software can realize the simulation of human skin flap suture? I tried the ansys workbench and couldn't figure it out.
The problem is not trivial, but I think is possible to do that with any FE software. I don't know about ANSYS, but for my simulations I used Abaqus and I achieved the closure by using the user-defined multi-point constraint (MPC) subroutine.
In general, the final position of the nodes on the two boundaries to join is unknown and the way I used to solve that problem is to impose kinematic constraints to enforce two paired nodes to move toward each other. In may case, I wrote the MPC subroutine such that two paired nodes a and b were kinematically coupled with a third control node c with the kinematic equation (Ua-Ub)-Uc(Xb-Xa)=0, where U and X are the displacement vector and the initial position vector respectively. With such a constraint the closure is achieved by imposing a displacement of 1 to the node c during the analysis, where Uc=1 represents the complete closure.
Of course that constraint must be applied on all the paired nodes on the boundaries and must be connected to the same control point c.
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