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Torsional vibration absorber using liquid

Research Project

Project/Area Number 08650283
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionSaitama University

Principal Investigator

SATO Yuichi  Saitama Univ., Eng.Dept., Professor, 工学部, 教授 (30134828)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsTorsional vibration / Vibration absorber / Rotating body / Wave / Forced vibration / Liquid / Tuning condition
Research Abstract

In rotating machinery, it is generally found that exciting torque occurs at the same frequency as the rotating speed or at multiples of the rotating speed. An untuned vibration damper, such as the Lancaster damper.is frequently used to reduce torsional vibrations. However, it is not as effective as a dynamic absorber. If an attached dynamic absorber has the same natural frequency as the exciting frequency, vibration is suppressed. A centrifugal pendulum vibration absorber effectively eliminates torsional vibrations if it is well tuned. However, it sometimes does not operate satisfactorily due to friction or insufficient adjustment.
An The experimental and theoretical study is performed on suppression of torsional vibrations of a rotor by attaching a hollow cylinder partially filled with liquid. The hollow cylinder is divided into identical sectors by radial walls. In addition to measuring torsional vibration, surface waves were photographed to observe the motion of the contained liquid. The number of divisions of tested hollow cylinders is 2,3,4,6, and 8. The tuning conditions for fill ratios are also examined. Experimental results show that the surface waves move backward that is travel in the direction opposite the rotation. Analysis including the Coriolis acceleration terms is presented. Analytical results show good agreement with the experimental ones whereas the analysis without Coriolis terms shows poor agreement. Accordingly the surface wave motion is not stationary due to the Coriolis force which acts while the liquid moves.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] Yuichi, SATO: "Suppression of torsioral vibrations bya sectioned hollow cylinder containing liquid" Proceedings of the Asia-Pacific Vibration Conference. 1. 290-295 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 佐藤 勇一: "液体を用いたねじり動吸振器" (社)日本機械学会機械大学・計測制御部門講演論文集. 97-103. 618-621 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yuichi Sato, Takeshi Kawata: "Suppression of Torsional Vibrations by a Sectioned Hollow Cylinder Partially Filled with Liquid" Proceedings of the Dynamics and Design Conference, Dynamics and Measurement, Division. JSME.97-10B. 618-621 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yuichi Sato: "Suppression of torsional vibrations by a sectioned hollow cylinder containing liquid" Proceedings of the Asia Pacific Conference. Vol.1. 290-295 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yuichi SATO: "Suppression of torsional vibrations by a sectioned hollog dylimder contaiming liquid" Proceodings of the Asia-Pacific vibralion Conference. 1. 290-295 (1995)

    • Related Report
      1997 Annual Research Report
  • [Publications] 佐藤勇一: "液体を用いたねじり動吸振器" (社)日本機械学会機械力学・計測制御部門講演論文集. 97-10B. 618-619 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yuichi SATO: "Suppression of torsional vibrations by a sectioned holly cylinder containing liquid" Proceedings of the Asia-Pacific Vibration Conference. 1. 290-295 (1995)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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