Vibro-Acoustic Coupling Analysis of Aero-Engine Combustion Chamber Model


Article Preview

The combustion instability is an important reason for fatigue failure of the vibro-acoustic coupling combustion chamber thin-walled structure. The vibro-acoustic coupling equations of closed cavity are derived; The vibro-acoustic coupling coefficient matrix is calculated, it indicates that couplings between the acoustic modes and the structure modes are strictly selective; The vibro-acoustic coupling characteristics of the finite length simply supported closed cylindrical space and the combustion chamber flame tube modals are studied with the finite element method, and the little effect of modal coupling on frequency value is founded; The vibro-acoustic coupling test validation of the combustion chamber flame tube model is completed, and the results show that both the structure modes of the flame tube and the acoustic modes have the phenomenon of weak coupling.



Edited by:

Ran Chen




Y. T. Ai et al., "Vibro-Acoustic Coupling Analysis of Aero-Engine Combustion Chamber Model", Applied Mechanics and Materials, Vols. 44-47, pp. 4100-4104, 2011

Online since:

December 2010




[1] Rob Huls. Accousto-Elastic Interaction in Combustion Chambers. PhD thesis, University of Twente, (2006).

[2] R.A. Huls. Vibration prediction in combustion chambers by coupling finite elements and large eddy simulations. Journal of Sound and Vibration 304 (2007) 224-229.


[3] Artur K. Pozarlik. Numerical Study of Structural Vibration Induced by Combustion Noise-One Way Interaction. In Proceeding of the International Congress On Sound and Vibration 14, (2007).

[4] Guoyong Jin, Tiejun Yang, Zhigang Liu , Wanyou Li and Zhenlin Ji . Analysis of structural-acoustic coupling of an enclosure surrounded by flexible panel. Journal of Acoustics. 2005, 32(2): 178-188.

[5] Yuansheng Sheng, Keming Wang and Xiaoming Wu. Analysis of Noise Spectrum and Identification of Acoustic Excitation Sources in Annular Combustion Chamber of Aeroengine [J]. Journal of Aerengine, 2003, 9(23): 1-6.

[6] Banghui Yin, Yanting Ai, Yanbin Chen and Chuan Li. Analysis of inner acoustic field character of annular combustion chamber modal of aero-engine. Journal of Shenyang Institute of Aeronautical Engineering. 2009,26(5): 27-30.

[7] D.J. Bodony, S.K. Lele. Low frequency sound sources in high-speed turbulent jets[R]. Center for Turbulence Research's Annual Research Briefs. (2006).

[8] Bin Qian, Shixing Yang. On Vibration Response of the Closed Cylindrical Shell. 2002, 21(1): 122-126.

[9] Linyang Xie, Guoping Chen. Numerical calculations of the coupling between vibration of a enclosed cylindrical shell and the sound field [J]. THE JANGSU AERONAUTICS. (2008).

[10] H. Uberall. Acoustics of Shells[J]. Acoustical Physics. 2001, 47(2): 115-139.

Fetching data from Crossref.
This may take some time to load.