| 陈红伟,吴瑞孟,陈梓君,贺义.高速列车商务舱内降噪方案研究[J].,2023,42(5):1081-1089 |
| 高速列车商务舱内降噪方案研究 |
| Study on Noise Reduction Scheme in VIP Room of High-Speed Train |
| 投稿时间：2022-06-14 修订日期：2023-08-29 |
| 中文摘要: |
| 轨道交通工具的噪声问题越来越受到人们的关注，本文针对某高铁商务舱内噪声过大的问题应用统计能量模型结合实验进行问题诊断，发现内装地板的振动是车内噪声的主要来源，进而分析结构传递路径是导致内装地板振动过大的原因。结合主要的能量贡献路径提出了应用分布式吸振器、地板吸音板以及改变地板连接结构的方式来降低车内噪声。通过实验验证发现优化后主要的噪声峰值频率100-300Hz之间有明显改善，商务舱内的噪声由75.1dBA下降至71.3dBA，达到了降噪目标。 |
| 英文摘要: |
| The noise of the rail transportation problem get more and more people’s attention. In this paper in order to solve the noise problem in the VIP room of a high-speed train, statistical energy analysis methods are used to diagnose the problem combined with experiments. The vibration of the inner-floor is the main source of interior noise, then transfer path analysis shown structure-borne noise through connections between inner-floor and outer-floor need to be concerned. Combined with the main energy contribution path, the distributed vibration absorber, the floor sound-absorbing board and the way of changing the structure connection are proposed to reduce the interior noise. Through experimental verification, it is found that the main peak noise frequency between 100-300Hz is significantly improved after optimization, and the noise in VIP room is reduced from 75.1dBA to 71.3dBA, reaching the target of noise reduction. |
| DOI：10.11684/j.issn.1000-310X.2023.05.022 |
| 中文关键词: 商务舱噪声,统计能量，隔声量 |
| 英文关键词: Noise in VIP Room, SEA, Sound Transmission Loss |
| 基金项目: |
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