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Influence of the Gyroscopic Effects on Friction Induced Vibration in Aircraft Braking in System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 17, 2012 by SAE International in United States
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Aeronautical brakes are subject to non-linear unstable vibrations. In particular, two modes appear and present a risk for the structure. Firstly, the whirl modes consist of a rotating bending motion of the axle out-of-phase with the brake torque tube. It is due to a coupling of two bending modes of the axle in orthogonal directions. Secondly, the brake squeal mode resulting from stick-slip or sprag-slip phenomena consists of a rotational motion of the brake around the axle. Those vibrations are not resulting from an external excitation but are friction-induced self-excited. Hence, they are dependent on tribological phenomena specific to carbon disks and are in particular controlled by the friction coefficient μ.
In order to take into account the dynamical aspect in brake design, Messier-Bugatti-Dowty wants to simulate modes and acceleration g's levels. This article deals with the improvement of such a model.
A finite element of the brake exists. It is able to reproduce whirl modes and squeal mode. In order to improve it, physical phenomena must be introduced. Here, the impact of gyroscopic effects is evaluated. For this, an analytical model is built to determine the consequences on frequencies and stability.
CitationHurel, G., Diebold lng, J., Besset, S., and Jézéquel, L., "Influence of the Gyroscopic Effects on Friction Induced Vibration in Aircraft Braking in System," SAE Technical Paper 2012-01-1804, 2012, https://doi.org/10.4271/2012-01-1804.
- Kinkaid, N. O'Reilly, O. Papadopoulos, P. “Automotive disc brake squeal” Journal of Sound and Vibration 267 1 105 166 2003 10.1016/S0022-460X(02)01573-0
- Lorang, X. “Instabilité des structures en contact frottant : Application au crissement des freins à disque de TGV” PhD thesis Ecole Polytechnique Paris 2007
- Guichard, J. “Freinage à très hautes performances - exemple aéronautique” Technique de l'ingénieur (B5580) 1996
- Spurr, R. 1961 “A theory of brake squeal” Proceedings of the Institution of Mechanical Engineers 33 40
- Hoffmann, N. “A minimal model for studying properties of the mode-coupling type instability in friction induced oscillations” Mechanics Research Communications 29 4 197 205 2002 10.1016/S0093-6413(02)00254-9
- Sinou, J. Dereure, O. Mazet, G. Thouverez, F. Jezequel, L. “Friction-induced vibration for an aircraft brake system-Part 1: Experimental approach and stability analysis” International Journal of Mechanical Sciences 48 5 536 554 2006 10.1016/j.ijmecsci.2005.12.002
- Chevillot, F. Sinou, J. J. Hardouin, N. 2009 “Nonlinear transient vibrations and coexistences of multi-instabilities induced by friction in an aircraft braking system” Journal of Sound and Vibration 328 555 574 2006 10.1016/j.jsv.2009.08.028
- Chang, C. F. Ulbricht, T. E. “Asymmetric approach in solving aircraft brake vibration” Tech. Rep. 2002-01-2948 SAE International Warrendale, PA 2002 10.4271/2002-01-2948
- Lalanne, M. Ferraris, G. “Dynamique des rotors en flexion” Technique de l'ingénieur (B5110) 1996
- Hervé, B. “Analysis of squeal noise and mode coupling instabilities including damping and gyroscopic effects” European Journal of Mechanics - A/Solids 27 141 160 2008 10.1016/j.euromechsol.2007.05.004