摘要
为给地铁车辆部件的选型提供依据,文章对地铁车辆的塞拉门、内藏门进行隔声性能比较试验研究。利用LMS Test.lab振动噪声测试系统,在相同的环境条件下,测量2种型式车门在开门和关门状态下的声压级,分析了各测点的噪声信号与参考信号的相干性。根据插入损失原理,研究内藏门和塞拉门的隔声性能。试验结果表明,塞拉门的隔声性能要优于内藏门。
In order to supply the basis of component selection of metro vehicles, the sliding-plug and sliding pocket door of the metro vehicles are studied with comparative test in the paper. The LMS Test.lab is used to measure the sound pressure level for the two types of door with the state of open and close the doors in the same ambient condition. The coherence of the each point noise signal with the reference signal is analyzed. According to the theory of insertion loss, the sliding-plug and sliding pocket door sound insulation performance is studied. The test results show that the sliding-plug door sound insulation performance is superior to the sliding pocket door.
出处
《电力机车与城轨车辆》
2013年第3期46-49,共4页
Electric Locomotives & Mass Transit Vehicles
关键词
地铁车辆
隔声性能
相干性
插入损失
metro vehicle
sound insulation performance
coherence
insertion loss
