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| 吸声材料的当量声阻率 | |
| 引用本文： | 吴小清,王登峰,徐诚,程悦荪,朱明武.吸声材料的当量声阻率[J].农业机械学报,2000,31(2):19-21. |
| 作者姓名： | 吴小清 王登峰 徐诚 程悦荪 朱明武 |
| 作者单位： | 1. 上海铁道大学机械系 2. 吉林工业大学汽车工程学院 3. 南京理工大学机械学院 |
| 基金项目： | 机械工业部高校跨世纪优秀人材基金!资助项目 (项目编号 :962 5 0 40 2 ) |
| 摘 要： | 在进行车辆乘座室声固耦合振动有限元分析时 ,得到一反映吸声材料对声波吸收作用的复阻尼矩阵。本文从能量守恒原理出发 ,提出了将吸声材料的声抗率转化到声阻率中去的当量声阻率 ,这样既能简化计算 ,又能保证具有较高的计算精度 |
| 关 键 词： | 吸声材料 车辆乘座室 当量声阻率 有限元 |
| 修稿时间： | 1999－04－06 |
Equivalent Specific Acoustic Resistance of Sound Absorbing Materials |
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| Wu Xiaoqing,Wang Dengfeng,Xu Cheng,Cheng Yuesun,Zhu Mingwu.Equivalent Specific Acoustic Resistance of Sound Absorbing Materials[J].Transactions of the Chinese Society of Agricultural Machinery,2000,31(2):19-21. | |
| Authors: | Wu Xiaoqing Wang Dengfeng Xu Cheng Cheng Yuesun Zhu Mingwu |
| Institution: | Wu Xiaoqing(Shanghai Railway University) Wang Dengfeng Cheng Yuesun(Jilin University of Technology) Xu Cheng Zhu Mingwu (Nanjing University of Science and Technology) |
| Abstract: | A complex damping matrix that contains specific acoustic impedance of sound absorbing materials is obtained while using finite element method to analyze the vibration coupling system of sound and vehicle cab structure. In this article an equivalent specific acoustic resistance of sound absorbing materials is proposed according to the energy conservation law. The results indicate that it will improve the computation accuracy and make the solving of finite element equation easier. When used to analyze interior noise of vehicle cab lined with sound absorbing materials on the panel. |
| Keywords: | Sound absorbing materials Specific acoustic impedance Finite element |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |