I simulated a LAD artery using FSI modeling (Fluid in Fluent and Solid in Transient Structural). I set velocity waveform as inlet boundary conditions and pressure wave form as outlet. When i check the result there is not any problem with Fluent part and the results make sense but about the deformation i can not say the same thing. The deformation increases linearly with the time not pressure or velocity (you can see the chart in attached file). Anybody knows where the problem may be?