The damping devices are often used on machinery to increase the damping and reduce the vibrational effects caused due to running of machinery.These vibrational effects disturb the whole assembly and the building in which the machinery is working.The vibrational frequency of the machinery may cause the vibrations of large amplitude.To avoid this disturbance ,the damping devices are often used on machinery.
For example the shock absorber of a car provides damping force to avoid excessive oscillations.