高速列车包间噪声特性及降噪方案设计验证
Noise Characteristics in the Compartment and Design and Verification of Noise Reduction Scheme of High-Speed Train
马凯 1汤晏宁 2贺义 2张捷 3丁国富4
作者信息
- 1. 西南交通大学机械工程学院 成都,610031;中车长春轨道客车股份有限公司 长春,130062
- 2. 中车长春轨道客车股份有限公司 长春,130062
- 3. 四川大学高分子材料工程国家重点实验室 成都,610065
- 4. 西南交通大学机械工程学院 成都,610031
- 折叠
摘要
针对高速列车包间噪声问题及降噪措施进行了相关研究.首先,通过线路试验分析了高速列车包间噪声特性,包括噪声频谱、声源识别和声品质,掌握了包间中心与铺面上方测点的噪声差异,明确了包间噪声控制目标;其次,基于统计能量分析方法建立了高速列车包间噪声预测模型,并进行了试验验证,开展了包间声能量贡献分析,确定了降噪方案设计指标,进而对车体进行了隔声方案优化设计;最后,通过包间噪声的迭代预测,确定了车体降噪方案的可行性,并进行了线路试验验证.结果表明,采用笔者设计的降噪措施,包间噪声总值降低了3.2 dB(A),包间原本较高的响度和粗糙度得到明显控制,尖锐度也略有降低,声品质得到了优化.
Abstract
Relevant research has been conducted on the noise characteristics in the compartment of a sleeper car-riage and corresponding noise reduction measures.First,through the in-situ experiments,the noise characteris-tics in the compartment of a high-speed train are analyzed in detail,including the noise spectrum,sound source identification and sound quality.The differences in noise levels between the compartment's center and the mea-suring point above the pavement are obtained,and the noise control objective for the compartment is defined.Then,based on the method of statistical energy analysis,a noise prediction model of the sleeper carriage is es-tablished and validated.Using the validated simulation model,the acoustic energy contribution of the compart-ment is analyzed.The design index of the noise reduction scheme is determined,and then the sound insulation scheme of the carbody is optimised.Finally,through iterative prediction of compartment noise and field tests,the feasibility of the carbody noise reduction scheme is analysed and validated.The experimental results show that the total noise in the compartment is reduced by 3.2 dB(A)after the noise reduction measures designed in this paper are adopted.The original high loudness and roughness in the compartment have been significantly con-trolled,the sharpness has also been slightly reduced,and the sound quality has been optimised.
关键词
高速列车/车内噪声/噪声控制/噪声预测/声品质/隔声Key words
high-speed train/interior noise/noise control/noise prediction/sound quality/sound insulation引用本文复制引用
基金项目
国家自然科学基金(52002257)
牵引动力国家重点实验室开放基金(TPL2205)
出版年
2024
NETL
NSTL
万方数据