基于柔性边界的地铁车辆刚柔耦合动力学分析研究  

Analysis and research on rigid-flexible coupling dynamics ofmetro vehicles based on flexible boundaries

作　　者：金鑫 胡定祥 王洪雨 李雨晗 JIN Xin;HU Dingxiang;WANG Hongyu;LI Yuhan(Technology Center of CRRC Nanjing Puzhen Co.,Ltd.,Nanjing 230001,China)

机构地区：[1]中车南京浦镇车辆有限公司技术中心,江苏南京230001

出　　处：《铁道机车与动车》2025年第3期1-5,11,I0001,共7页Railway Locomotive and Motor Car

摘　　要：通过精确模拟7种轨道、隧道的几何形状、材料特性及其之间的接触关系获得了车辆的柔性边界,建立了车辆—轨道—隧道的柔性多体系统耦合动力学模型。通过计算车辆在隧道内轨道上行驶时车辆及轨道的动态响应,包括位移、加速度等,获得不同轨道的减振特性,分析不同轨道对车辆运行安全性和舒适性的影响。为深入了解车辆、轨道和隧道之间的相互作用,优化提升各系统的性能提供了趋势导向和数据支撑。By accurately simulating the geometric shapes,material properties,and contact relationships of seven types of tracks and tunnels,we obtained the flexible boundaries of vehicles,and established a flexible multibody system coupling dynamic model of the vehicletrack-tunnel.By calculating the dynamic responses of the vehicle and track,including displacement,acceleration,and other parameters,when the vehicle travels on the track inside the tunnel,we obtained the vibration reduction characteristics of various tracks,and analyzed the impacts of various tracks on the safety and comfort of vehicle operation,which provides trend guidance and data support for a deeper understanding of the interactions among vehicles,tracks,and tunnels,optimizing and improving the performance of systems.

关 键 词：柔性边界 多体系统 轨道减振 车辆动力响应 

分 类 号：U270[机械工程—车辆工程]