310 統計的エネルギ解析におけるサブシステムのモデリング手法の開発 : 第一報,システムの分割に関する検討(新計測・解析手法)(OS.2 交通輸送システム)

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This paper describes the technique of defining subsystem model in Experimental Statistical Energy Analysis (ESEA). SEA is applied to investigate the vibro-acoustic behavior of industrial structures like cars, trains, aircrafts and the others with high modal density and overlap in the middle and high frequency range. The structure is divided into subsystems complying with the SEA basic assumption: the structure must be divided in weakly coupled subsystems. In case of complex structure, many subsystems are defined and the large amount of measurement is required. This research proposes the effective method of subsystem modeling. The 1st report shows the simplifying technique in consideration of predicting accuracy and the dividing method based on measured internal loss factor of car body.
2001-03-09