Analysis of an impact damper of vibrations

An analysis of the system with two degrees of freedom, which - provided that its parameters are properly selected - can operate as an impact damper of vibrations, is presented. The investigations have been carried out in two directions. In the first one, it has been assumed that the mass of the system playing the role of a damper is 10 times lower than the mass of the basic system and that this mass is suspended from a spring characterised by low stiffness. In the second case, the damper mass has been assumed to be four times smaller than the basic mass and it is suspended from a spring whose stiffness is four times lower than the stiffness of the basic system spring. Moreover, it has been shown that the impact damper of vibrations operates more efficiently than a classical dynamic vibration damper. (C) 2001 Elsevier Science Ltd. All rights reserved.