Effect on vibrating attenuation by the fit of elastic ring squeeze film damper

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (11) : 232-238.

LI Yan, LIAO Mingfu, WANG Siji

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Abstract

In order to investigate the influence on vibrating attenuation by the fit of elastic ring squeeze film damper, a rotor system with elastic ring squeeze film damper (ERSFD) was constructed，and two ERSFD components were designed. By changing the fit of the pedestals on elastic ring and the unbalance of the rotor, the vibration reduction characteristics of each state of the elastic rings were experimental investigated. The results reveal: the performance of ERSFD may lead to failure when inner pedestals is interference fitted, and can be better when clearance fitted; the change of the fitting on outer pedestals does not lead to failure of the ERSFD performance; the damping effect of ERSFD and the response characteristic of rotor can be more linear when the pedestals of elastic rings are interference fitted. A guide is suggested that inner pedestals of the elastic ring should be clearance fitted when designing ERSFD.

Key words

squeeze film damper / elastic ring / fit / mechanical vibration / vibration reduction characteristics

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LI Yan, LIAO Mingfu, WANG Siji. Effect on vibrating attenuation by the fit of elastic ring squeeze film damper[J]. Journal of Vibration and Shock, 2020, 39(11): 232-238

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