基于Simpack车辆-道岔耦合动力学性能研究

Research on the Dynamic Performance of Vehicle-turnout Coupling Based on Simpack

针对CRH3型动车组侧向通过18号高速道岔时产生较大“晃车”现象展开研究。基于Simpack建立车辆-道岔耦合动力学模型,分析轮轨间的动力学性能关系,并采用原设计的理论计算结果做对比。结果表明:当速度小于等于80km/h时,单节车辆所有轮对的的轮轨垂向力均小于UIC中规定的垂向力170kN;横向力均满足规定的横向力36kN;脱轨系数均满足所规定值0.8。该研究思路和方法可以对道岔和转向架结构动力设计、安全监控、参数优化等方面提供一定的理论基础。

Study is carried out on the phenomenon of large"swaying car"when the CRH3 EMU passes the No.18 high-speed turnout laterally.Based on Simpack,a vehicle-turnout coupling dynamic model is established to analyze the dynamic performance relationship between the wheel and rail,and the theoretical calculation results of the original design are used for comparison.The results show that:when the speed is less than or equal to 80km/h,the wheel-rail vertical force of all wheelsets of a single vehicle is less than the vertical force of 170kN specified in UIC;the lateral force meets the specified lateral force of 36kN;the derailment coefficient meets the The specified value is 0.8.The research ideas and methods can provide a certain theoretical basis for the dynamic design,safety monitoring and parameter optimization of switch and bogie structures.