市域铁路动车组车下弹性吊挂设备对车体振动和乘坐舒适性的影响  

Impact of City Railway EMU Elastic Suspended Equipment under Carbody on Vehicle Vibration and Ride Comfort

作　　者：韦海菊 邓锐 WEI Haiju;DENG Rui(CRRC Nanjing Puzhen Co.,Ltd.,210031,Nanjing,China)

机构地区：[1]中车南京浦镇车辆有限公司,南京210031

出　　处：《城市轨道交通研究》2022年第12期253-256,共4页Urban Mass Transit

摘　　要：为研究车下吊挂设备参数对市域铁路动车组车体弹性振动的影响,建立了精细化的车体有限元模型和刚-柔耦合动力学模型。根据隔振设计原理,为车辆车下变压器和风源装置设计了相应的弹性吊挂装置,并分别分析了对应的吊挂频率及其动刚度,同时分析了弹性吊挂装置对乘客乘坐舒适度的影响。计算列车在最高速度140 km/h的运行工况下,不同弹性吊挂频率设计时基于ISO 2631指标的车辆地板振动加速度总量。结果表明,弹性吊挂装置能够有效减少车辆弹性振动,提高乘坐舒适性。To study the influence of the parameters of suspended equipment under carbody on the elastic vibration of city railway EMU carbody,a refined finite element model of the carbody and a rigid-flexible coupling dynamics model are established.According to vibration isolation design principle,an elastic suspended device is designed corresponding to transformer and air-source device under carbody,and the correspondent installation frequency and dynamic stiffness are analyzed respectively,as well as the impact of the elastic suspended device on passenger riding comfort.Under working condition of train running at highest speed of 140 km/h,in different designs of elastic suspension frequency,the total amount of vehicle floor vibration acceleration is calculated based on ISO 2631 index.Results show that the elastic suspended device can effectively reduce the vehicle elastic vibration,improving the ride comfort.

关 键 词：市域铁路 动车组 弹性吊挂 车下设备 吊挂频率 车体振动 乘坐舒适性 

分 类 号：U270.11[机械工程—车辆工程]