Chrono help for example file

Comments on CHRONO example spring_non_linear.r3d

Non linear stiffness for springs

What to do: load the file and press the play button on the animation timeline (watch at least 3 seconds of simulation).

Springs and dampers can have non-linear properties. In this exampe, you see a spring with 'hardening' effect. Open its Property window and see the Custom tab. You will see that here the k stiffness is modulated on the basis of a ChFunction (which can be easily edited with a graphical editor).