Multidimensional mount effectiveness for vibration isolation

Abstract

A method is presented for predicting the performance of multiple mount passive isolation systems. Performance is expressed in terms of a mount effectiveness matrix which relates the structure vibration in an isolated system to the structure vibration in an unisolated, or hard mounted system. Frequency response functions of the engine, isolator, and structure are used to construct the effectiveness matrix at each frequency of interest. Effectiveness matrix expresions are derived for a mounting system connected at multiple points by massless isolators. Isolator design guidelines are developed for the single and multiple isolator mounting systems