SOME THEORETIC AND PRACTICAL ASPECTS REGARDING PASSIVE AND SEMI ACTIVE VIBRATION CONTROL.

The vibrations most often leads to undesirable effects such as mechanical failure, costly maintenance of machines, worsening positioning performance of machines tools and also human discomfort. Theoretically, the vibrations can sometimes be eliminated. However, due to the high manufacturing equipment cost that may be involved in eliminating or reduction of vibration, we need a compromise between an acceptable level of vibration and the supplementary manufacturing cost of devices. In this paper have been presented some classical techniques of passive and semi active vibration control in order to reduction the vibration level, the control of natural frequencies through damping modification, using of different isolators and absorbers systems. [ABSTRACT FROM AUTHOR]