How to provide a friction preload torque value for rotational joint from a state variable (from Simulink)

Question

I am trying to model friction preload torque for a rotating shaft, whose friction value should be fed by Simulink through a state variable. I cannot link the value in state variable to Friction input, since it can accept only design variable. (attached screenshot)

Can anyone help me in solving this issue.?

Thanks in advance.

Attached Files (1)

Jesper Slattengren · Accepted Answer

No, you can't. But you can create a force/torque that acts between the two parts and loads the joint.