In this paper, the dynamic characteristics of an oil-lubricated, sealed squeeze film damper (SFD) with a central feeding groove are analytically derived based on an enhanced dynamic pressure field analysis, accounting for the effect of the seal and feeding grooves, and its validity is experimentally verified. A test rig using an active magnetic bearing system as an exciter is introduced to identify the dynamic characteristics of SFDs with high accuracy and efficiency. Experiments are conducted with the seal gap varied, in order to investigate its effect on the dynamic characteristics of the SFD. The estimated and analytical damping and inertia coefficients for the sealed SFD with a groove are compared and it is found that the pressure field analysis, when neglecting the effect of the seal groove, tends to far underestimate the SFD dynamic coefficients.
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e-mail: gjkim@novic.kaist.ac.kr
e-mail: cwlee@novic.kaist.ac.kr
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January 2005
Technical Papers
Dynamic Characteristics of Sealed Squeeze Film Damper With a Central Feeding Groove
Keun-Joo Kim,
e-mail: gjkim@novic.kaist.ac.kr
Keun-Joo Kim
Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering KAIST, Science Town, Daejeon, 305-701, Korea
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Chong-Won Lee, Fellow, ASME
e-mail: cwlee@novic.kaist.ac.kr
Chong-Won Lee, Fellow, ASME
Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering KAIST, Science Town, Daejeon, 305-701, Korea
Search for other works by this author on:
Keun-Joo Kim
Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering KAIST, Science Town, Daejeon, 305-701, Korea
e-mail: gjkim@novic.kaist.ac.kr
Chong-Won Lee, Fellow, ASME
Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering KAIST, Science Town, Daejeon, 305-701, Korea
e-mail: cwlee@novic.kaist.ac.kr
Manuscript received January 26, 2004; revision received June 30, 2004. Review conducted by: L. San Andre´s.
J. Tribol. Jan 2005, 127(1): 103-111 (9 pages)
Published Online: February 7, 2005
Article history
Received:
January 26, 2004
Revised:
June 30, 2004
Online:
February 7, 2005
Citation
Kim, K., and Lee, C. (February 7, 2005). "Dynamic Characteristics of Sealed Squeeze Film Damper With a Central Feeding Groove ." ASME. J. Tribol. January 2005; 127(1): 103–111. https://doi.org/10.1115/1.1828075
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