动车组轮装制动盘翘曲变形仿真及试验分析  

Simulation and Experimental Analysis of Warping Deformation for EMU Wheel-mounted Brake Disc

作　　者：吕宝佳 杨广楠 曹建行 焦标强 陈凯 LYU Baojia;YANG Guangnan;CAO Jianhang;JIAO Biaoqiang;CHEN Kai(Locomotive&Car Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Beijing Zongheng Electro-Mechanical Technology Co.,Ltd.,Beijing 100094,China)

机构地区：[1]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081 [2]北京纵横机电科技有限公司,北京100094

出　　处：《铁道机车车辆》2025年第1期63-68,共6页Railway Locomotive & Car

基　　金：中国国家铁路集团有限公司科技研究开发计划(P2021J038);中国铁道科学研究院集团有限公司课题(2020YJ056)。

摘　　要：为分析轮装制动盘与车轮拆卸分解后发生翘曲变形过程,建立了动车组轮装制动盘热—弹—塑性有限元仿真模型,进行铸钢制动盘材料拉伸试验,获取了国内某动车组用铸钢制动盘材料在不同温度工况下非线性应力—应变关系。通过进行制动初速度350 km/h紧急制动和制动盘冷却后与车轮拆卸分解过程仿真计算,掌握了轮装制动盘发生翘曲变形的演变过程,为减小轮装制动盘变形量和后续制动盘检修复用提供支撑。利用盲孔法测量了服役后轮装制动盘摩擦面近表面的残余应力,制动盘摩擦面近表面残余应力以周向拉伸残余应力为主,拉伸残余应力深度为2~3 mm,与有限元仿真结果吻合。In order to analyze the warping deformation mechanism of wheel-mounted brake disc,thermal-elastic-plastic finite element simulation model of wheel-mounted brake disc of EMU was established,and the nonlinear stress-strain relationship of cast steel brake disc material under different temperature conditions was obtained by tensile test.Through the simulation calculation of emergency braking at the initial speed of 350 km/h and disassembling the wheel of the brake disc after cooling,the mechanism of warping deformation of the wheel-mounted brake disc is mastered which provides support for reducing the deformation of the wheel-mounted brake disc and the reuse of repaired brake disc.The residual stress near the friction surface of the wheel-mounted brake disc after serviced was measured by the blind hole method.The residual stress of the wheel mounted brake disc near the friction surface was mainly the circumferential tensile residual stress,which was consistent with the finite element simulation results.

关 键 词：动车组 轮装制动盘 热弹塑性 翘曲变形 残余应力 

分 类 号：U270.35[机械工程—车辆工程]