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- 저자 : Fuyin Ma (검색결과 1 건)
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Vibration and noise analysis of multiphysical coupling systems
Fuyin Ma,Jiu Hui Wu,Weiwei Wu 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.8
Vibration and noise analysis of complex mechanical systems is very difficult by traditional technologies. We present a novel technologyto analyze the vibration and noise of complex structures. This technology can be divided into three stages step by step. First, it isnecessary to process the load simplification, modal analysis, vibration and noise testing in the preparation stage. Then, in the vibrationanalysis stage, a virtual far-field excitation method is presented to obtain more accurate vibration response results in the near-field andfar-field response points, of which the nonlinear behaviors need not be considered. And the solver error caused by the distance betweenthe excitation point and response points could be reduced. Last, in the noise analysis stage, a modal partition method is put forward tosolve the structure radiated noise according to the distributions of the low-level modal shapes, which is a rapid and efficient method toobtain a radiated noise distribution for the complex structures. On the whole, this technology has potential applications in vibro-acousticproblems solving for the complex systems in practical engineering.
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