The paper presents stability of a rotor system with a squeeze film damper (SFD) using an electromagnet. The electromagnet is installed in the inner damper of the SFD. The proposed SFD has basically the property of a conventional SFD and variable damping according to the strength of the applied electric current. Therefore, when the applied current is controlled, the whirling amplitude of the rotor system can be effectively reduced in a wide operational speed range. In the present work, the performance of the SFD was experimentally investigated according to the magnetic field strength. When the applied current increased, the whirling amplitude greatly reduced at the critical speeds and damping ratio increased. © 2004 American Institute of Physics.
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July 2004
Technical Papers
A New Type Controllable Squeeze Film Damper Using an Electromagnet
Young Kong Ahn, Assistant Prof.,
Young Kong Ahn, Assistant Prof.
School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
ahn@mail1.pknu.ac.kr
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Jong-Yong Ha, MS. Student,
Jong-Yong Ha, MS. Student
School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
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Bo-Suk Yang, Professor
Bo-Suk Yang, Professor
School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
Search for other works by this author on:
Young Kong Ahn, Assistant Prof.
ahn@mail1.pknu.ac.kr
School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
Jong-Yong Ha, MS. Student
School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
Bo-Suk Yang, Professor
School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received May 2003; Revised January 2004. Associate Editor: R. Ohayon.
J. Vib. Acoust. Jul 2004, 126(3): 380-383 (4 pages)
Published Online: July 30, 2004
Article history
Received:
May 1, 2003
Revised:
January 1, 2004
Online:
July 30, 2004
Citation
Ahn, Y. K., Ha, J., and Yang, B. (July 30, 2004). "A New Type Controllable Squeeze Film Damper Using an Electromagnet ." ASME. J. Vib. Acoust. July 2004; 126(3): 380–383. https://doi.org/10.1115/1.1759693
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