Titlebook: IUTAM Symposium on Designing for Quietness; Proceedings of the I M. L. Munjal Conference proceedings 2002 Springer Science+Business Media D

唠叨

Reducing Radiated Sound Power by Minimizing the Dynamic Compliance,ed to the surroundings, it is not obvious that redesigning the structure so as to minimize the input power results in a reduction of the radiated sound power. In this work, we present numerical evidence to show that dramatic reductions in sound power radiated from a structure immersed in a light flu

Presbycusis

Compressor Related Noise Control in Air-Conditioners and Refrigerators,erators, the compressor is known to be one of the major noise sources. Therefore it is highly essential for the designer of the compressor to understand the noise mechanisms, including the sources and the transfer paths, so that low noise compressors can be effectively developed. It is also equally

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难听的声音

MERIT

胆小鬼

失败主义者

声明

Active Control of Structure-Borne Noise in Helicopter Cabin Transmitted Through Gearbox Support Str is based on a recently proposed model called Active Spectral Element Model (ASEM). This model, which is a displacement based, finite element type discretized model in the Fourier domain, can be used for developing “realistic” models of integrated active strut systems on which the gearbox is mounted

chassis

Sea for Diesel Engine Transfer Path,alytically determined for a beam-beam connection, which enabled fine tuning of the experimental method of determining coupling loss factor between the subsystems of the transfer path model. After evaluating all the SEA parameters, the energy ratio between the piston and crank pin was computed. A tot

predict

Reducing Radiated Sound Power by Minimizing the Dynamic Compliance,wer is almost as much as that obtained by minimizing the sound power directly; however, the proposed technique circumvents the need to solve the acoustical equations, thereby resulting in considerable saving in computational cost.