Skip to main content
main-content

Tipp

Weitere Kapitel dieses Buchs durch Wischen aufrufen

2021 | OriginalPaper | Buchkapitel

Characterization of a Squeeze Film Damper for Aircraft Engine Applications

verfasst von: Praveen Thirumalasetty, Kishore Vetcha, Mahesh Sivakumar, Tod R. Steen, Anthony M. Metz

Erschienen in: Proceedings of the 6th National Symposium on Rotor Dynamics

Verlag: Springer Singapore

share
TEILEN

Abstract

High-speed turbomachinery designs rely on adequate damping at the bearing supports to provide smooth operation throughout the sub-idle and normal operating speed ranges. Squeeze film damper (SFD) designs employ a thin oil film between bearing and housing that softens the bearing support and provides increase damping. During operation, the dynamic motion of the damper squeezes the thin lubricant film, thus generating hydrodynamic pressures and film forces to dissipate mechanical energy. This paper discusses test results from two different sealed SFD designs: The first design uses butt-end piston rings to seal the damper film where the oil exits the damper through a small circumferential gap in the piston rings. The second design uses on overlap piston ring design which more completely seals the oil in the damper. For this design, an alternate set of exit holes is provided to allow the oil to exit the damper. Testing was done over a range of frequencies from 20 to 300 Hz, with oil supply pressures from 14 to 140 psi, with oil temperatures from 75 to 225F and with SFD eccentricity ratios from 0.05 to 0.5, encompassing both cavitated and non-cavitated regimes of operation. The damping and added mass terms for the SFD were identified through standard data reduction algorithms. Test results indicate that for the same basic damper geometry, a significant difference in measured damping coefficient was obtained between the two different damper designs. Variation in damping using the overlap piston ring damper design was much less than with the butt-end damper design due to the alternate set of exit holes at all operating conditions. No significant drop in damping observed at the cavitation regions for both the damper designs. Piston rings were observed to rotate. A discussion about the observed results is included.

Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 15 Tage kostenlos.

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 15 Tage kostenlos.

Literatur
Metadaten
Titel
Characterization of a Squeeze Film Damper for Aircraft Engine Applications
verfasst von
Praveen Thirumalasetty
Kishore Vetcha
Mahesh Sivakumar
Tod R. Steen
Anthony M. Metz
Copyright-Jahr
2021
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-15-5701-9_23

Premium Partner

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.