Quarter Car Model Suspension: over-damping not working as expected?

We have a 2DOF quarter car model designed in simulink. It seems to work as expected until we attempt to over-damp/critically-damp the system by setting suspension damping constant very high.

We would expect a typical overdamped response with a long rise time and no overshoot but instead we get extremely long settling time and lots of overshoot.

Any explanations for why this might be happening?

Cheers, Jason

[Guy Rouleau]

We need more details:

- What equations did you implement? (Can share the model somewhere?)

- What is the amplitude of the displacement?

- What solver are you using? (I would go with variable step, stiff, like ode15s)

Answer 1

[Olexander Zhytenko]

hello, can I help?

Answer 2

[Sujithkumar]

Check the model once again,or model it again 80% sure that there is some error in the model from experience