Optimal Damper Location for Mid-High Frequency Vibration Control on Built-Up Structures: Case Study Using VA One

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Abstract:

This paper presents a guide to identify optimal damper location to reduce vibration on built-up structures. The guide is derived from simulation studies carried out on a set of benchmark models. Optimization is carried out using genetic algorithm. Optimal location is found using found using Generic algorithm and the hybrid method. The hybrid modelling method combines the finite element method (FEM) and Statistical energy analysis (SEA) to provide an efficient response predication for mid-high frequencies. The guide to find optimal damper location is tested on a fuselage model of Boeing 737. The fuselage model is developed using VA One software. Good agreement is seen for the optimal locations using the simple guide and result from VA One.

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705-709

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September 2011

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[1] Asan G.A. Muthalif, Active control of high-frequency vibration, PhD thesis, Cambridge University, (2008) [2] R.H. Lyon, Statistical energy analysis of dynamical systems: Theory and applications, MIT Press, Cambridge (Massachusetts), (1975) [3] R.S. Langley, Mid and High-frequency vibration analysis of structures with uncertain properties, 11th International congress on sound and vibration, St. Petersburg, Russia, (2004) [4] Information on http://www.esi-group.com/products/vibro-acoustics/va-one [5] P.J. Shorter, and R.S. Langley, On the reciprocity relationship between direct field radiation and diffuse reverberant loading, Journal of the Acoustical Society of America, 117(1)(2005), pp.85-95

DOI: 10.1121/1.1810271

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