Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Damping Performance Analysis of Electro-Rheological Squeeze Film Damper Sealed with Slotted Rings

슬롯 링을 장착한 전기유변 스퀴즈 필름 댐퍼의 감쇠성능 해석

  • 정시영 (인하공업전문대학, 항공기계과) ;
  • 김창호 (한국과학기술연구원 트라이볼로지연구센터) ;
  • 이용복 (한국과학기술연구원 트라이볼로지연구센터)
  • Published : 2000.04.01
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Abstract

The present paper proposes a new type of an electro-rheological squeeze film damper (ER SFD) of which the damping capacity can be controlled by the application of electric field. The new ER .SFD- is sealed with slotted rings having electrodes at the inside of the constant gap. The ER SFD can provent the problem of electric short which might be occurred in a previous ER SFD. Reynolds lubrication equation for a Newtonian fluid and the end leakage equation for ER fluids are numerically solved to get the pressure distributions and the damping coefficients of the ER SFD. The results show that the damping coefficients greatly increase with increasing the yield shear stress of ER fluid. In addition, the unbalance response analysis of a flexible rotor supported on the new ER SFD implies that the rotor system can be operated with the minimum of rotor amplitude and force transmissibility by controlling the yield shear stress of ER fluids properly.

Keywords

References

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Cited by

  1. ER 유체 감쇠기를 이용한 유연 회전축 계의 진동제어 vol.12, pp.5, 2000, https://doi.org/10.5050/ksnvn.2002.12.5.365