I´m doing a Finite element model updating program on matlab. i´m using the optimization toolbox.Basically, I´ve created and input file in Ansys programming language that return the deformation in the finite element mesh nodes of my model. the matlab optimizes the geometric parameters of the model and returns the results to ansys, where the calculations of the new deformation using the new values for the geometric parameters are done.
the program runs without errrors or warnings. the problem is that the fval of fmincon function returns always same value in every iteration. Can you tell me what might be wrong?