THE PREDICTION OF RANDOM ACOUSTIC VIBRATION OF EQUIPMENT MOUNTED ON HONEYCOMB PANEL

摘要

This paper deals with the method to predict the random acoustic vibration of equipment mounted on honeycomb panel, which is the common case of satellite. The prediction method is based on Statistical Energy Approach (SEA) and experiment results show that the damping loss factor is dominating parameter rather than coupling loss factor for most of satellite honeycomb panels to acoustic environment. It is understood from testing result that the damping loss factor is dominated by the acoustic radiation loss in high frequency range and theatrical acoustic radiation prediction gives good accuracy in the high frequency range. This makes the prediction approach simple and possible to analysis the each panel intead of mounted on satellite. Based on the experiment result, normalization of damping loss factor is studied relative to material modulus, size, and thickness of honeycomb panel. The process of study and result is introduced including the influence of mounted equipement in this paper.