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Vibration Sensitivity of Large Turbine Generator Shaft Trains to Unbalance Read chapter Read first chapter

2015 | OriginalPaper | Chapter

Influence of the Supporting Structure Dynamic Behaviour on the Shaft Vibration of a Real Rotating Machine

Authors : Andrea Vania, Paolo Pennacchi, Steven Chatterton

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

Publisher: Springer International Publishing

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Abstract

The dynamic behaviour of the supporting structure of rotating machines can significantly affect the shaft-train vibration. When a foundation natural frequency is close to the machine operating speed, the forces caused by even almost negligible malfunctions can cause very high vibration levels. This paper shows a case history in which a natural frequency of a generator case, and that of an auxiliary shaft, significantly affected the dynamic behaviour of a power unit. The existence of these critical natural frequencies has been confirmed through specific experimental tests, the results of which are shown in the paper.

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previous chapter Development and Validation of a Model to Describe the Bearings Interaction in Rotating Machines Due to Elastic Supporting Structures
next chapter Development and Preliminary Validation of a New Strategy to Model the Interaction Between Rotating Machines and Elastic Supporting Structure
Literature
1.
Lalanne M, Ferraris G (1998) Rotordynamics predictions in engineering. Wiley, Chichester
2.
Adams M (2001) Rotating machinery vibration. Marcel Dekker Inc., New York
3.
Pennacchi P, Bachschmid N, Vania A, Zanetta G, Gregori L (2006) Use of modal representation for the supporting structure in model based fault identification of large rotating machinery: part 2—application to a real machine. Mech Syst Sig Process 20(3):682–701CrossRef
4.
Muszyńska A (2005) Rotordynamics. Taylor & Francis Group—CRC Press book, New YorkMATH
Metadata
Title
Influence of the Supporting Structure Dynamic Behaviour on the Shaft Vibration of a Real Rotating Machine
Authors
Andrea Vania
Paolo Pennacchi
Steven Chatterton
Copyright Year
2015
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_175

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