噪声与振动控制2016，Vol.36Issue(3)：201-204,213,5.DOI:10.3969/j.issn.1006-1335.2016.03.041
两种新型材料地铁轨枕的降噪性能研究
Study on the Noise Reduction Characteristics of Two New-material Sleepers Used in Metro Lines
摘要
Abstract
The vibro-acoustic characteristics of two kinds of sleepers made up of two new materials, the resin and the unsaturated polyester, respectively, used in Metro lines are studied. The hybrid FEM-BEM vibro-acoustic model is established. Firstly, the vibration characteristics of the two kinds of sleepers and a traditional concrete sleeper are tested by hammering method, and their damping coefficients are obtained. Then, taking a unit force as the excitation input, the 3D entity FEM of the railway track structure is used to simulate the dynamic behavior of the track structure, which consists of the rails, rail-pads, sleepers and ballast. The track vibration responses are calculated. Finally, the displacement responses are used as the boundary condition to calculate the noise radiation with the acoustic boundary element model. The simulation results show that both new-material sleepers have the damping and noise-reduction effect in comparison with the traditional concrete sleeper, and the unsaturated polyester sleeper has more obvious shock noise reduction effect than the resin sleeper.关键词
声学/新型材料轨枕/振动特性/有限元方法/边界元方法/声辐射Key words
acoustics/new-material sleeper/vibration characteristic/finite element method/boundary element model/sound radiation分类
通用工业技术引用本文复制引用
许孝堂,王衡禹,刘玉霞,王军,温泽峰,吴磊..两种新型材料地铁轨枕的降噪性能研究[J].噪声与振动控制,2016,36(3):201-204,213,5.基金项目
国家自然科学基金资助项目(U1361117；51275430)；中国铁路总公司重点课题资助项目(2015G008-B)；四川省应用基础研究资助项目(2013JY0039)；牵引动力国家重点实验室开放课题资助项目(TPL1401) （U1361117；51275430）
