摘要
由于存在制造误差以及温度变化等因素,轨道车辆的悬挂参数具有显著不确定性,这种不确定性会导致动车组平稳性、安全性等动力学指标具有一定随机性。建立考虑不确定性悬挂参数的车辆垂向动力学模型,随后基于蒙特卡洛(Monte Carlo,MC)理论和虚拟激励分析法开展车辆振动响应分析、运行平稳性分析和灵敏度分析。研究结果表明:悬挂参数的不确定性会显著影响车辆的垂向随机振动特性,同时也会影响车辆运行平稳性。此外,根据灵敏度分析的结果可知,车辆的垂向随机振动响应对于悬挂参数的灵敏度在不同频段内显著不同。研究结果可为不确定性悬挂参数下车辆的动力学分析及优化设计提供参考。
Due to manufacturing errors and temperature changes,the suspension parameters of rail vehicles have significant uncertainty,which will bring certain randomness of the dynamics indicators of the EMU,such as stability and safety.In this paper,a vertical dynamic model of the vehicle considering uncertain suspension parameters was established.The vehicle vibration response analysis,operation stability analysis,and sensitivity analysis were carried out based on Monte Carlo theory and pseudo-excitation method.The research results show that the uncertainty of suspension parameters will significantly affect the vertical random vibration characteristics of the vehicle and the running stability of the vehicle.In addition,according to the results of sensitivity analysis,the sensitivity of the vertical random vibration response of the vehicle to the suspension parameters is significantly different in different frequency bands.The research results may provide a reference for the dynamic analysis and optimization design of vehicles under uncertain suspension parameters.
作者
文磊缤
周凯
宫岛
周劲松
WEN Leibin;ZHOU Kai;GONG Dao;ZHOU Jinsong(Institute of Railway and Urban Rail Transit,Tongji University,Shanghai 201804,China)
出处
《噪声与振动控制》
北大核心
2025年第5期190-195,265,共7页
Noise and Vibration Control
基金
上海市自然科学基金资助项目(23ZR1468900)
上海市软科学研究资助项目(23692118500)
牵引动力国家重点实验室开放课题资助项目(TPL2305)。
