平板円形弁の振動の一例について

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書誌事項

タイトル別名
  • On an Example of Vibration of Circular Disc Valve which has an Overlap between Valve Disc and Seat
  • ヘイバン エンケイベン ノ シンドウ ノ イチレイ ニ ツイテ

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抄録

Making use of a theoretical formula which expresses approximately, under the consideration of viscosity, the relation of floating force F and the lift of the circular disc valve which has an overlap between valve disc and seat, the equation of motion on valve is established, and the condition of valve vibration is discussed by means of Routh's criterion. Then as an example, the vibration of a water-supply cock is studied. The results obtained reveal that, in case where the radius of valve disc is relatively larger, when compared with the radius of valve seat. the effective pressure P is high and ∂F/∂P is negative, a selfexcited vibration appears, if the lift of valve is smaller, and then chattering occurs owing to the disappearance of a restoring force, if the lift is higher. In order to stop the vibration, it is effective to make small the overlap of valve disc and seat.

収録刊行物

  • 日本機械学会誌

    日本機械学会誌 63 (501), 1410-1411, 1960

    一般社団法人 日本機械学会

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