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Vibro-acoustic Radiation Characteristics Analysis of Railway Vehicle Wheel with damping ridges Based on Modal Strain Energy

引用

Chinese Journal of Mechanical Engineering 2011年第6期24卷 1056-1067页

作者： HE Bin XIAO Xinbiao JIN Xuesong FANG Jianying State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031 China Knorr-Bremse Systems for Rail Vehicles（Suzhou） Co. Ltd Suzhou 215151 China

The existing researches on the damping wheel mainly focus on investigating the influence of damping structure change on the vibro-acoustic *** changes include the geometric size of the damping structure,the damping material parameters,and the placement,and so *** order to further understand the mechanism in reducing the acoustic radiation of railway wheel with layer damping treatment,in this paper,the wheel is simply modified by a full-sized circular *** circle plate side has stuck circumference constrained damping ridges and radial constrained damping ridges on *** on a hybrid finite element method-boundary element method（FEM-BEM）,the paper develops a vibro-acoustic radiation model for such a distributed constrained damping *** vibration and acoustic radiation of the circular plate is *** the analysis,the dynamic response of the system is obtained by using the 3D finite model superposition *** obtained vibration response is used as the initial boundary condition in solving Helmholtz boundary integral equation for the sound radiation *** the procedure,firstly,the modal analysis of the circular plate is performed to get the distribution of the system modal strain ***,the vibro-acoustic radiation characteristics of the plate with different kinds of circumference damping ridges and radial damping ridges are compared in order to try to find the best effective damping ridge ***,using the distribution of the plate modal strain energy investigates the effect of the ridge distribution locations on the circular plate on its vibro-acoustic *** calculation and analysis research results show that,the sticking circumference and radial damping ridges on the plate can control the vibro-acoustic radiation of the plate effectively in different frequency *** distribution of the constrained damping ridge has an effect on reduction in vibro-acoustic radiation of the circular *** presen

关键词： wheel/rail noise vibro-acoustic radiation circumference damping ridge radial damping ridge modal strain energy

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