Study on the isolator-structure interaction. influence on the supporting structure

Abstract

Vibration isolation techniques allow reduction in base movement transmitted to a platform to be isolated. There are different techniques that can be applied, but in many scenarios, the most suitable control system is active vibration isolation. This applies an active force on a platform, and hence on the supporting structure. In some applications, the base structure can be considered as an infinitely stiff system. However, the use of the supporting structure for other purposes, such as human activities or different isolators, leads to a requirement to study how the active vibration isolation affects the base response in case it is not infinitely stiff. In this work, the general vibration isolation scenario is presented and the influence of active vibration isolation on the response of the supporting structure is analysed and compared with that of the alternative passive vibration isolation technique.