Regarding SetStopDissipation and SetStopStiffness functions.

edit

Hi,

I am trying to model a flapping wing and I have several revolute joints in my model. I want to set up my model in such a way that when the wing reaches its topmost allowable position, suddenly the resistance increases. I was going through the various functions for joint class and I found these two functions SetStopDissipation and SetStopStiffness, and it seems like they will be useful for my case, but I am not sure what they do. Please suggest what Stop dissipation and stop stiffness mean. Thank you.