Damping

In physics, damping is any effect that tends to reduce the amplitude of vibrations.[1]

Graph of a damped vibratory deflection y.

Damped spring.

In mechanics, the internal friction may be one of the causes of such damping effect. For many purposes the damping force F_f can be modeled as being proportional to the velocity v of the object:

${\displaystyle F_{\mathrm {f} }=-cv\,,}$

where c is the damping coefficient, given in units of Newton-seconds per meter.