G1000-5-5 モード展開に基づく振動インテンシティ計測法の実験的検討(機械力学・計測制御部門一般講演(5):音響・波動,社会変革を技術で廻す機械工学)

概要

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This paper discusses a new method for structural intensity measurement based on the modal expansion of structural intensity for flexural vibration on beams. The intensity field indicates the magnitude and the direction of vibratory energy flows at any point in a structure. The sensor array which is composed of two or four accelerometers is often used to measure the intensity vector at any point. On the other hand, we had proposed the modal expansion of intensity. The expansion can be used to estimate the intensity field from the modal properties evaluated by the experimental modal analysis. In this paper, we propose a new measurement method for intensity on beam and discuss the detail condition of the method. Then the numerical and experimental demonstrations are carried out to show the usefulness of the proposed method.
一般社団法人日本機械学会の論文
2010-09-04