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《Journal of Naval University of Engineering》 2018-01
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Study of calculation method for mechanical impedance of cylinder type spring filled with air

SHUAI Chang-geng;LI Peng-hui;DENG Jie;Inst.of Noise &Vibration,Naval Univ.of Engineering;National Key Laboratory on Ship Vibration & Noise;  
Based on the linear air wave theory and the non-moment theory of a revolutionary thin shell,the mechanical impedance of a cylinder type spring filled with air is analysed by calculating the transfer matrix of the shell and the sound pressure distribution of the air with the method of approximate analytic approach.The result is verified by means of finite element method.It shows that the proposed method is feasible.Finally,the influences of the initial pressure on the transfer matrix of the shell and the sound pressure distribution of the air are analyzed.The research provides a new idea for the future study on the mechanical impedance characteristics of spring.
【Fund】: 教育部“新世纪优秀人才支持计划”资助项目
【CateGory Index】: TH135
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