自动旅客运输系统车辆结构噪声仿真研究
朱冬进1徐海大1周劲松2
Simulation Research on APM System Vehicle Structure Noise
ZHU DongjinXU HaidaZHOU Jinsong
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作者信息:1.1.中车浦镇阿尔斯通运输系统有限公司, 241007， 芜湖；
2.2.同济大学铁道与城市轨道交通研究院， 201804， 上海
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Affiliation:CRRC Puzhen Alstom Transportation System Co., Ltd., 241007, Wuhu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.12.046
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中图分类号/CLCN:U270.1+1∶U239.9
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栏目/Col:其他
摘要:
为研究自动旅客运输系统的车内结构声特性，通过建立有限元仿真模型，基于现场测试和多体系统动力学模型，分别得到车下电机和空气弹簧的振动激励。将激励施加到车体进行结构噪声仿真测试，计算分析车内结构噪声声压级和噪声频谱特性。研究结果表明：在电机和空气弹簧的结构振动激励下，车内结构噪声响应存在多个峰值，特别是在315 Hz处，各个观测点的A计权声压级较大；车体中部结构声较大，与其他4个观测点相比，其A计权总声压级高3 dB(A)左右。
Abstracts:
To study the interior structural sound characteristics of APM (automated people mover) system, by establishing finite element simulation model, based on field tests and multi-system dynamics model, vibration excitations of off-vehicle motor and air spring are obtained. By applying excitations to car body and carrying out structure noise simulation tests, the interior structure noise sound pressure level and noise spectral characteristics are calculated and analyzed. Research results show that under the structural vibration excitation of motor and air spring, there are multiple peaks in the interior structure noise response, especially at 315 Hz, the A-weighted sound pressure level of each observation point is relatively larger. The carbody middle section generates larger structure sound, and compared with the other four observation points, the A-weighted total sound pressure level is about 3 dB (A) higher.
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