Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Experimental Parametric Study on the Rotordynamic Characteristics and Optimal Design of a Flexible Rotor Supported by a Slotted-Ring Electro-Rheological Squeeze Film Damper

슬롯 링 형상을 갖는 전기 유변 스퀴즈 필름 댐퍼로 지지된 연성 로터의 동특성 및 최적설계 파라미터 실험 연구

  • 이용복 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 김창호 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 이남수 (한양대학교 기계설계학과) ;
  • 최동훈 (한양대학교 기계설계학과) ;
  • 정시영 (인하공업전문대학교 항공기계과)
  • Published : 2000.06.01
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Abstract

A discharge free Electro-Rheological Squeeze Film Damper (ER-SFD) with predetermined-clearances at leakage ends can inherently eliminate electric discharge problems while still supplying stable leakage control. Test results show that the damping force of the slotted-ring ER-SFD is mainly affected by electric voltage, oil supply pressure, position of the damper and ratio of effective surface area of slotted-rings. As the supply voltage is larger, the amplitudes of both slotted ER-SFD and rotor are decreased at first and second critical speeds. The influence of the oil supply pressure and the effective surface area ratio was shown mainly near the first critical speed. The effective surface area ratio of slotted-rings influences the reduction of flexible rotor vibration. As a result, experimental results confirm that the slotted-ring ER-SFD satisfactorily controls the flexible rotor vibration, while eliminates the inherent electric discharge problems in conventional ER-SFDs.

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References

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