| 地铁铝合金车辆的车内噪声控制及噪声响度评价 |
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| 引用本文： | 耿烽,左言言. 地铁铝合金车辆的车内噪声控制及噪声响度评价[J]. 中国铁道科学, 2011, 32(6) |
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| 作者姓名： | 耿烽 左言言 |
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| 作者单位： | 1. 江苏大学振动噪声研究所,江苏镇江212013;南京工程学院车辆工程系,江苏南京211167
2. 江苏大学振动噪声研究所,江苏镇江,212013 |
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| 基金项目： | 江苏省自然科学基金资助项目 |
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| 摘 要： | 根据地铁A型铝合金车辆的车体结构建立车内声场计算模型,利用声传递向量技术进行噪声源分析.结果表明:车体地板中部区域、车顶中部区域以及右侧墙中部附近区域对车内声学的贡献较大,是车内的主要噪声源.在增加这些区域车体的壁板厚度后,车内的噪声得到明显地控制.利用Zwicker法对车内噪声响度的计算结果表明:车体壁板增厚后,降低的噪声主要集中在100 Hz频段以下,而在人耳更为敏感的150～350Hz频段上,噪声的降低幅度相对较小.
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| 关 键 词： | 地铁车辆 铝合金车体 车内噪声 响度 |
Interior Noise Control and Loudness Evaluation for Metro Aluminum Alloy Vehicle |
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| GENG Feng,ZUO Yanyan. Interior Noise Control and Loudness Evaluation for Metro Aluminum Alloy Vehicle[J]. China Railway Science, 2011, 32(6) |
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| Authors: | GENG Feng ZUO Yanyan |
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| Affiliation: | GENG Feng1,2,ZUO Yanyan1(1.Institute of Vibration and Noise,Jiangsu University,Zhenjiang Jiangsu 212013,China,2.Department of Vehicle Engineering,Nanjing Institute of Technology,Nanjing Jiangsu 211167,China) |
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| Abstract: | Based on the car body structure of metro A-type aluminum alloy vehicle,the calculation model of coach interior sound field was set up,and the noise source was analyzed by acoustic transfer vector method.The results show that the nearby middle area of the floor,the roof and the right side wall of the car body structure are the main noise sources which have greater acoustic contribution to the interior noise.After the panel's thickness of these areas being increased,the interior noise was significantly contro... |
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| Keywords: | Metro vehicle Aluminum alloy car body Interior noise Loudness |
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