The University of Southampton
University of Southampton Institutional Repository

Non-linear modelling of rotor dynamic systems with squeeze film dampers: an efficient integrated approach

Bonello, P., Brennan, M.J. and Holmes, R. (2002) Non-linear modelling of rotor dynamic systems with squeeze film dampers: an efficient integrated approach Journal of Sound and Vibration, 249, (4), pp. 743-773. (doi:10.1006/jsvi.2001.3911).

Record type: Article


Squeeze film dampers used in rotor assemblies such as aero-engines introduce non-linear damping forces into an otherwise linear rotor dynamic system. The steady state periodic response of such rotor dynamic systems to rotating out-of-balance excitation can be efficiently determined by using periodic solution techniques. Such techniques are essentially faster than time marching techniques. However, the computed periodic solutions need to be tested for stability and recourse to time marching is necessary if no periodic attractor exists. Hence, an efficient integrated approach, as presented in this paper, is necessary. Various techniques have been put forward in order to determine the periodic solutions, each with its own advantages and disadvantages. In this paper, a receptance harmonic balance method is proposed for such a purpose. In this method, the receptance functions of the rotating linear part of the system are used in the non-linear analysis of the complete system. The advantages of this method over current periodic solution techniques are two-fold: it results in a compact model, and the receptance formulation gives the designer the widest possible choice of modelling techniques for the linear part. Stability of these periodic solutions is efficiently tested by applying Floquet Theory to the modal equations of the system and time marching carried out on these equations, when necessary. The application of this integrated approach is illustrated with simulations and an experiment on a test rig. Excellent correlation was achieved between the periodic solution approach and time marching. Good correlation was also achieved with the experiment.

Full text not available from this repository.

More information

Published date: 24 January 2002
Organisations: Dynamics Group


Local EPrints ID: 37516
ISSN: 0022-460X
PURE UUID: bea8bad8-17f0-4168-bfff-121619e2bfb9

Catalogue record

Date deposited: 22 May 2006
Last modified: 17 Jul 2017 15:42

Export record



Author: P. Bonello
Author: M.J. Brennan
Author: R. Holmes

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.