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Abstract
Finite Element based vibro-acoustic modelling and analysis procedures are developed for aircraft panels using commercially available MSC-NASTRAN in the low frequency segment (<250 Hz). A modal strain energy based approach is followed to introduce the Constrained Layer Damping (CLD) at optimally selected locations. Subsequently, a vibro-acoustic test facility has been designed and commissioned to test the aircraft panels with active-passive noise control solutions. A good correlation is observed between numerical simulation of CLD and experiment on an aluminium panel. Further, a two channel active structural acoustic control experiment is conducted and the use of smart structure technology for noise attenuation through structural vibration control has been demonstrated. Thus, the importance of activepassive control solutions for fuselage cabin noise reduction is highlighted.
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References
- Malcolm J Crocker., Handbook of "Noise and Vibration Control", 2007, John Wiley and Sons, Inc, New Jersey, USA.
- Grewal, A, Zimick, D. G., Hurtbise, L and Leigh, B., "Active Cabin Noise and Vibration Control for Turboprop Aircraft Using Multiple Piezoelectric Actuators", J. Intelligent Material Systems and Structures, Vol. 11, pp. 438-447, June 2000.
- Paolo Gardanio., "Review of Active Techniques for Aerospace Vibro-acoustic Control", J. of Aircraft, Vol. 39 (2), pp. 206-214, March-April 2002.
- Mohan D Rao., "Recent Applications of Viscoelastic Damping for Noise Control in Automobiles and Commercial Airplanes", J. of Sound and Vibration, 262, pp.457-474.
- Indranil D and Ron Hund., "Interior Noise Prediction of Hawker Horizon Aircraft Using Statistical Energy Analysis", NOISE-CON 2004, July 12-14, Baltimore, Maryland, pp. 333-346, 2004.
- Michel van Tooren and Lars Krakers.,"Multi-disciplinary Design of Aircraft Fuselage Structures",AIAA 2007-767, 45th AIAA Aerospace Sciences Meeting and Exhibit, 8-11 January, 2007, Reno, Nevada.
- Cotoni, V., Gardner, B., Carneal, J and Fuller, C., "Modelling Methods for Vibro-acoustic Analysis of Commercial Aircrafts", 14th International Congress on Sound andVibration, Cairns, Australia, 9-12 July,
- Kamal Idrisi., Marty E Johnson and James P Carneal., "Heterogeneous (HG) Blanket Design
- Strategies for Passive Control of Aircraft Interior Noise", Noise Control Engineering Journal, 56(6),
- Nov-Dec, 2008, pp.425-433.
- Fuller, C. R., Elliott, S. J and Nelson, P.A., "Active Control of Vibration", Academic Press, 1997.
References
Malcolm J Crocker., Handbook of "Noise and Vibration Control", 2007, John Wiley and Sons, Inc, New Jersey, USA.
Grewal, A, Zimick, D. G., Hurtbise, L and Leigh, B., "Active Cabin Noise and Vibration Control for Turboprop Aircraft Using Multiple Piezoelectric Actuators", J. Intelligent Material Systems and Structures, Vol. 11, pp. 438-447, June 2000.
Paolo Gardanio., "Review of Active Techniques for Aerospace Vibro-acoustic Control", J. of Aircraft, Vol. 39 (2), pp. 206-214, March-April 2002.
Mohan D Rao., "Recent Applications of Viscoelastic Damping for Noise Control in Automobiles and Commercial Airplanes", J. of Sound and Vibration, 262, pp.457-474.
Indranil D and Ron Hund., "Interior Noise Prediction of Hawker Horizon Aircraft Using Statistical Energy Analysis", NOISE-CON 2004, July 12-14, Baltimore, Maryland, pp. 333-346, 2004.
Michel van Tooren and Lars Krakers.,"Multi-disciplinary Design of Aircraft Fuselage Structures",AIAA 2007-767, 45th AIAA Aerospace Sciences Meeting and Exhibit, 8-11 January, 2007, Reno, Nevada.
Cotoni, V., Gardner, B., Carneal, J and Fuller, C., "Modelling Methods for Vibro-acoustic Analysis of Commercial Aircrafts", 14th International Congress on Sound andVibration, Cairns, Australia, 9-12 July,
Kamal Idrisi., Marty E Johnson and James P Carneal., "Heterogeneous (HG) Blanket Design
Strategies for Passive Control of Aircraft Interior Noise", Noise Control Engineering Journal, 56(6),
Nov-Dec, 2008, pp.425-433.
Fuller, C. R., Elliott, S. J and Nelson, P.A., "Active Control of Vibration", Academic Press, 1997.