| 刘威,何泽银,曹昱坤,向银,王承登.用于汽车压缩机振动噪声控制的声子晶体设计与试验*[J].,2024,43(3):488-497 |
| 用于汽车压缩机振动噪声控制的声子晶体设计与试验* |
| Design and experiment of phononic crystal for vibration and noise control of automotive compressor |
| 投稿时间：2023-01-06 修订日期：2024-04-27 |
| 中文摘要: |
| 针对汽车压缩机低频振动噪声控制难的问题，基于局域共振机理在压缩机外壳设计一种声子晶体结构。借助有限元法，计算声子晶体带隙范围，阐明声子晶体结构参数与在压缩机外壳布置方式选取原因，分析其具备的优势。而后，定制各部分材料组装声子晶体实体并布置于压缩机外壳后端面，搭建压缩机振动噪声台架试验台，选取4个声学场点采集辐射噪声，并记录压缩机本体振动变化情况。进一步，选取某型号汽车搭建压缩机整车振动噪声试验台，在驾驶员座椅右侧靠近人耳处设置声学麦克风采集驾驶室内辐射噪声，并记录压缩机本体振动变化情况。试验结果表明，压缩机外壳安装声子晶体后，在声子晶体带隙频率范围对应转速内，台架与整车试验测得总辐射噪声与压缩机本体各向振动加速度RMS值基本存在改善，且部分转速范围效果显著。本文为汽车压缩机低频振动噪声控制研究提供了新的参考。 |
| 英文摘要: |
| In order to solve the problem that it is difficult to control the low frequency vibration and noise of the automobile compressor, a phononic crystal structure is designed in the compressor housing based on the local resonance mechanism. With the aid of finite element method, the band gap range of phononic crystal is calculated, the reasons for selecting the structural parameters of phononic crystal and their arrangement in the compressor housing are clarified, and the advantages of the designed phononic crystal are analyzed. Then, each part of the material is customized to assemble the phononic crystal entity and arranged on the rear end face of the compressor housing. A compressor vibration and noise bench is built. Four acoustic field points are selected to collect the radiated noise, and the vibration changes of the compressor body are recorded. Furthermore, a certain type of automobile is selected to build the whole vehicle vibration and noise test-bed of the compressor, and an acoustic microphone is set up on the right side of the driver''s seat near the human ear to collect the radiated noise in the driving room, and the vibration changes of the compressor body are recorded. The test results show that, after installing phononic crystals in the compressor housing, the total radiated noise and RMS values of the compressor body vibration acceleration measured in the bench test and the vehicle test are basically improved within the corresponding speed range of the phononic crystal band gap frequency, and the effect is significant in some speed ranges. This paper provides a new reference for the research of low frequency vibration and noise control of automobile compressor. |
| DOI：10.11684/j.issn.1000-310X.2024.03.003 |
| 中文关键词: 汽车压缩机 声子晶体 台架试验 整车试验 振动噪声控制 |
| 英文关键词: Automobile compressor Phononic crystal Bench test Vehicle test Vibration and noise control |
| 基金项目:重庆市自然科学基金项目（cstc2019jcyj-msxmX0799）；重庆市九龙坡科技计划项目（2020-02-001-Z）；重庆市技术创新与应用发展专项(cstc2019jscx-msxmX0038) |
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