Given a curve how to find the damping ratio?

[sgsawant]

I have a data of a system (2nd order spring-mass-damper). From the looks of it, the system is quite certainly overdamped. Can someone guide me as to how to find the damping ratio?

Regards,

-sgsawant

 

[K^2]

I'm not sure you can, for over-damped oscillator. You can fit it to exponent, but the decay rate will depend on both the undamped frequency and the damping ratio.

If it was under-damped or critically damped, you'd be able to.

 

[sgsawant]

Thanks!