人工衛星構体の搭載機器パネルの音響振動解析(機械力学,計測,自動制御)

概要

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This paper is concerned with the vibroacoustic response of satellite equipment panel subjected to high frequency diffused acoustic field excitation. Various prediction methods for the response have been developed, namely: (i) mass ratio method, (ii) NASA Lewis method, and (iii) impedance method. The prediction accuracy of those methods, however, is poor for the case where the structure of the equipment is distributed in small area of the panel and can be regarded as a plate. In this paper, the new method dealing with that case in particular is developed considering area impedance coupling between equipment and satellite panel. The acoustic excitation experiments for nine cases of equipment mount are conducted to compare the exiting methods with the new method developed in this paper. The result from the comparison shows that the new method provides a wide flexibility not only for the case of main concern but also for the case of large area equipment where Lewis method may be the best approach for the prediction.
社団法人日本機械学会の論文
2006-08-25