| 城轨车辆地板减振降噪分析 |
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| 引用本文： | 刘宁,刘厚林,杨国纪,刘晓波.城轨车辆地板减振降噪分析[J].电力机车技术,2014(6):34-35. |
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| 作者姓名： | 刘宁 刘厚林 杨国纪 刘晓波 |
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| 作者单位： | 南车株洲电力机车有限公司技术中心,湖南株洲412001 |
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| 摘 要： | 分析车下噪声在铝合金城轨车辆地板型材中的传播途径;分析自由组合结构损耗因子与模量比、厚度比之间的关系;对地板样件进行了隔声性能测试,试验结果表明该结构地板在全频率范围内都具有良好的隔声性能,隔声量达到40.8 d B。
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| 关 键 词： | 城轨车辆 地板 减振降噪 |
Analysis on vibration and noise reduction of mass transit vehicle floor |
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| LIU Ning,LIU Hou-lin,YANG Guo-ji,LIU Xiao-bo.Analysis on vibration and noise reduction of mass transit vehicle floor[J].Technology for Electric Locomotives,2014(6):34-35. |
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| Authors: | LIU Ning LIU Hou-lin YANG Guo-ji LIU Xiao-bo |
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| Institution: | (R＆D Center, CSR Zhuzhou Electric Locomotive Co., Ltd.,Zhuzhou 412001, China) |
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| Abstract: | This paper analyzes the transmission route of noise for aluminum alloy floor profile under mass transit vehicle,and presents the relationship among independent assortment structural loss factors and modulus ratio,thickness ratio. Through the sound insulation property test of floor sample piece,the result shows that the floor structure has good sound insulation property in whole frequency range,and the sound transmission loss reaches 40.8 dB. |
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| Keywords: | mass transit vehicle floor vibration and noise reduction |
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