This study addresses the nonlinear dynamic behavior of O-ring seals as the centering spring in squeeze film dampers. An analytical model is developed to predict the restoring and hysteresis characteristics of elastomer O-rings and extends the existing models to non-axisymmetric load conditions. Also, the inclusion of axial seals increases the damping capacity of squeeze film dampers. O-rings forces are investigated for different sizes, installation preloads, and operating conditions and contrasted with squeeze film damper’s hydrodynamic forces. This model is incorporated in linear and time transient rotordynamic analyses of a vertical turbocharger. It is shown that the O-rings contribution in rotor response for low rotational speeds and low amplitude vibrations is dominant and can not be ignored.
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ASME Turbo Expo 2013: Turbine Technical Conference and Exposition
June 3–7, 2013
San Antonio, Texas, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5527-0
PROCEEDINGS PAPER
Elastomer O-Rings as Centering Spring in Squeeze Film Dampers: Application to Turbochargers
Saeid Dousti,
Saeid Dousti
University of Virginia, Charlottesville, VA
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Jason A. Kaplan,
Jason A. Kaplan
University of Virginia, Charlottesville, VA
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Feng He,
Feng He
University of Virginia, Charlottesville, VA
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Paul E. Allaire
Paul E. Allaire
University of Virginia, Charlottesville, VA
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Saeid Dousti
University of Virginia, Charlottesville, VA
Jason A. Kaplan
University of Virginia, Charlottesville, VA
Feng He
University of Virginia, Charlottesville, VA
Paul E. Allaire
University of Virginia, Charlottesville, VA
Paper No:
GT2013-94923, V07BT30A018; 11 pages
Published Online:
November 14, 2013
Citation
Dousti, S, Kaplan, JA, He, F, & Allaire, PE. "Elastomer O-Rings as Centering Spring in Squeeze Film Dampers: Application to Turbochargers." Proceedings of the ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. Volume 7B: Structures and Dynamics. San Antonio, Texas, USA. June 3–7, 2013. V07BT30A018. ASME. https://doi.org/10.1115/GT2013-94923
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