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2015 | OriginalPaper | Chapter

Finite Element Modeling and Vibration Analysis of a Free Power Turbine Subjected to Non-synchronous Excitation

Authors : A. O. Pugachev, A. V. Sheremetyev, V. V. Tykhomirov, O. I. Shpilenko

Published in: Proceedings of the 9th IFToMM International Conference on Rotor Dynamics

Publisher: Springer International Publishing

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Abstract

This paper presents theoretical analysis of non-synchronous vibration in rotor systems. A finite element method on the basis of the Timoshenko beam formulation implemented in the in-house code is applied as a standard tool to perform transient rotordynamic analysis using the Newmark algorithm for the direct numerical integration of the equations of motion. The analysis is demonstrated for a free power turbine rotor system of a small-size turboprop engine. Different sources of non-synchronous excitation are studied including squeeze film damper and rotor-to-stator contact interaction.

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previous chapter A Parameter Preserving Model Order Reduction Algorithm for Rotordynamic Systems

next chapter Rotor-Dynamic Computer Simulations of Rolling Bearing in High-Speed Rotating Machinery

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Vance J, Royal A (1975) High-speed rotor dynamics—an assessment of current technology for small turboshaft engines. J Aircr 12:295–305CrossRef

Krämer E (1993) Dynamics of rotors and foundations. Springer, Berlin

Bathe KJ (1986) Finite-Elemente-Methoden. Springer, Berlin

Pugachev A, Tykhomirov V, Sheremetyev A, Spilenko O, Timchenko I (2010) Sensitivity analysis of squeeze film dampers using Reynolds equation. In: 8th IFToMM international conference on rotor dynamics, KIST, Seoul, Korea, pp 454–462

Wu J, Legrand M, Pierre C (2010) Non-synchronous vibration of a Jeffcott rotor due to internal radial clearance in roller bearings. In: 8th IFToMM international conference on rotor dynamics, KIST, Seoul, Korea, pp 446–453

Johnson K (2003) Contact mechanics. Cambridge University Press, Cambridge

Muszyńska A (2005) Rotordynamics. Taylor & Francis, Boca Raton

Title: Finite Element Modeling and Vibration Analysis of a Free Power Turbine Subjected to Non-synchronous Excitation
Authors: A. O. Pugachev
A. V. Sheremetyev
V. V. Tykhomirov
O. I. Shpilenko
Publisher: Springer International Publishing
Book: Proceedings of the 9th IFToMM International Conference on Rotor Dynamics
Print ISBN: 978-3-319-06589-2

Electronic ISBN: 978-3-319-06590-8

Copyright Year: 2015
DOI: https://doi.org/10.1007/978-3-319-06590-8_155

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