振動インテンシティ計測によるガスヒートポンプの加振源探査

概要

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This paper describes vibration intensity measurements and the search for exciting sources in a gas heat pump using a two-channel vibration intensity probe. Vibration intensity vectors show the vibration energy flow originating from the flexural motion of beams and plates. To clarify the direction and amplitude of vibration intensity at each point of the structure, two determining methods, i.e., the vector composition method employing measurements obtained in two perpendicular directions and the method of least square fitting to the directional characteristic of the probe, were examined in this study. These two methods were discussed from the points of view of accuracy and expediency of the measurements. The vibration intensity measurement was then applied to determine the exciting sources in gas heat pump package panels. The result of noise reduction obtained by taking countermeasures expresses the utility of vibration intensity measurement for the identification of exciting sources in a machine structure.
社団法人日本機械学会の論文
1991-01-25