1. Choosing a shock absorber

In general, the decision to install a shock absorber has far-reaching consequences in terms of technology and cost. For a value analysis carried out on a power transmission, the damper is like an intruder not directly involved in the essential function of the installation! Before deciding on its use, you need to be sure that all direct solutions – adapting the shaft line, controlling excitations – are ineffective or really impossible.

In all cases, effective operation of a damper requires a mass element to be set in motion by the vibrations to be damped. The connection zone between the damper support part and the installation is therefore located around a vibration belly, such as often exists at the free ends of rotors.

There are three classes of damper, differentiated by the type of dynamic coupling that exists between the rotor support...