介绍城轨车辆研发过程中对于整车噪声控制的流程和通过噪声源控制、隔声隔振、吸声设计的噪声控制方法。以某城轨车辆项目为例,建立了整车SEA仿真模型,对中空铝型材采用了等效隔声处理方式,以实测数据为噪声激励,分析了运动和静止工况下室内外的噪声声压分布情况,找出该型车辆噪声控制的薄弱环节,从而在后续设计中有针对性地进行降噪设计,为最终研制出舒适的低噪声轨道车辆提供参考。

This paper introduces the EMU test operation reliability data source,fault level and reliability index is defined,by carrying out the reliability statistics and evaluation,found product of the weak links,and then by taking the reliability of closed management,finally achieve the reliability target.

Taking SCS EMU as an object of research,this paper builds a full vehicle SEA simulation model for high frequency noise analysis of intercity EMU,analyzes the equivalent sound insulation mode of hollow aluminum profile,contrastively analyzes the simulation and testing results of sound pressure level of everywhere in vehicle interior,and verifies the veracity of the simulation result.So we could find the weakness point of intercity EMU noise control,in order to scheme out comfortable low noise rail vehicles.