| 基于NVH的车内声腔模态分析 |
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| 引用本文： | 刘成武,黄鼎键,钟勇.基于NVH的车内声腔模态分析[J].福建工程学院学报,2009,7(4). |
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| 作者姓名： | 刘成武 黄鼎键 钟勇 |
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| 作者单位： | 福建工程学院,机电及自动化工程系,福建,福州,350108 |
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| 基金项目： | 福建省科技厅青年人才基金，福建省教育厅科技项目，福建省科技平台建设项目 |
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| 摘 要： | 根据某车室壁板结构有限元模型,建立了车室声腔有限元模型.基于声学模态分析理论,利用SYSNOISE软件对该声学有限元模型进行自由模态分析,获得了车室声腔的各阶固有频率和模态振型,并将声学模态分析结果与汽车的各种激励源频率特性进行分析比较,其结论可用来改进车身系统的声学设计.
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| 关 键 词： | 车室声腔 有限元法 声学模态分析 |
Modal analysis of interior acoustic cavity based on noise,vibration and harshness(NVH) |
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| Liu Chengwu,Huang Dingjian,Zhong Yong.Modal analysis of interior acoustic cavity based on noise,vibration and harshness(NVH)[J].Journal of Fujian University of Technology,2009,7(4). |
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| Authors: | Liu Chengwu Huang Dingjian Zhong Yong |
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| Institution: | Electromechanical and Automation Engineering Department;Fujian University of Technology;Fuzhou 350108;China |
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| Abstract: | A finite element(FE) model of vehicle interior acoustic cavity was established in terms of an FE model of vehicle body panel structure.Based on acoustic modal analysis theories,a free modal analysis was conducted on the FEA model of the acoustic cavity using the SYSNOISE software.Different order natural frequencies and modal shapes of the acoustic cavity were obtained.The results of the acoustic modal analysis were compared with the frequency characteristic of inside and outside vehicle excitation sources.I... |
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| Keywords: | NVH |
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