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Damping coefficient estimation of a squeeze-film damperoperating in a dual shaft test rig

Published online by Cambridge University Press:  24 December 2010

Claude Gibert ,
Mikhail Guskov ,
Lionel Sanchez  and
Fabrice Thouverez
Claude Gibert
Affiliation:
Laboratoire de Tribologie et Dynamique des Systèmes, (LTDS, UMR CNRS 5513), Équipe Dynamique des Structures et des Systèmes, École Centrale de Lyon, 36 avenue Guy de Collongue, 69134 ÉcullyCedex, France
Mikhail Guskov*
Affiliation:
Laboratoire de Tribologie et Dynamique des Systèmes, (LTDS, UMR CNRS 5513), Équipe Dynamique des Structures et des Systèmes, École Centrale de Lyon, 36 avenue Guy de Collongue, 69134 ÉcullyCedex, France Processes and Engineering for Mechanics and Materials Laboratory, (PIMM, UMR CNRS 8006), Structures and System Dynamics group, Arts & Métiers Paristech, 151 boulevard de l’Hopital, 75013 Paris, France
Lionel Sanchez
Affiliation:
Laboratoire de Tribologie et Dynamique des Systèmes, (LTDS, UMR CNRS 5513), Équipe Dynamique des Structures et des Systèmes, École Centrale de Lyon, 36 avenue Guy de Collongue, 69134 ÉcullyCedex, France
Fabrice Thouverez
Affiliation:
Laboratoire de Tribologie et Dynamique des Systèmes, (LTDS, UMR CNRS 5513), Équipe Dynamique des Structures et des Systèmes, École Centrale de Lyon, 36 avenue Guy de Collongue, 69134 ÉcullyCedex, France
*
a Corresponding author:[email protected]
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Abstract

Squeeze film dampers (SFD) are used to reduce dynamical loads in rotating machinery or toimprove their performances in numerous industrial applications. The present paperconsiders the response of a dual shaft system with a SFD mounted on one of its bearings.The study is concerned with the overall system’s dynamics in presence of a sealed SFDbearing with a lateral feeding groove and more specifically with the characterization ofsuch damper in operational conditions. The design characteristics of the SFD are based onthe linear approximation and the optimization w.r.t. sensitivity of appropriate eigenmodesof a numerical model of the dual shaft test rig. In order to gain more insight into theSFD operation, the experimental kinematic and pressure measurements data are processedwithin a numerical model of the fluid film using the short bearing approximation of theReynolds equation and taking into account the flow into the groove. The work holds for lowReynolds number and completely sealed SFD were vapour cavitation is completely absent.

Keywords

Rotor dynamicsmulti-shaftcritical speedsqueeze film damperexperimentDynamique des machines tournantesmulti-rotorsvitesse critiqueamortisseur à film écraséexpérience
Type
Research Article
Information
Mechanics & Industry , Volume 11 , Issue 5 , September 2010 , pp. 297 - 308
Copyright
© AFM, EDP Sciences 2010

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References

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