摘要
为了探明车辆-轨道系统垂向振动与坐姿人体垂向振动之间的相互耦合作用影响,将人体视为依附于车厢地板的4自由度系统,在考虑车体弹性振动的基础上,建立了坐姿人体-车辆-轨道垂向耦合动力学模型,并利用实车线路运行试验对模型的正确性进行了验证。在此基础上,以车辆-轨道垂向统一模型、坐姿人体垂向振动模型和坐姿人体-车辆-轨道垂向耦合动力学模型为参考,分析了坐姿人体垂向振动对车辆-轨道系统垂向随机振动响应特征的影响、坐姿人体与车辆-轨道系统垂向耦合振动效应对坐姿人体垂向振动特性的影响,以及坐姿人体-车辆-轨道垂向耦合作用下的人体振动响应特性。研究成果为轨道车辆的乘坐舒适性分析及动力学性能优化提供了有效的模型参考和理论依据。
In order to explore the coupling effect between the vertical vibration of vehicle-track system and the vertical vibration of sitting human body,regarding the human body as a four-degree-of-freedom system attached to the car floor,a vertical coupling dynamic model of the sitting human body-vehicle-track system is established on the basis of considering the elastic vibration of the car body,and the correctness of the model is verified by real vehicle line operation test.Based on this,taking the vehicle-track vertical coupling dynamic model,the sitting human body vertical vibration model,and the vertical coupling dynamic model of the sitting human body-vehicle-track system as reference,the influence of sitting human body vertical vibration on the vehicle-track system vertical random vibration response characteristics,the influence of vertical coupling vibration effect of sitting human body and vehicle-track system on the vertical vibration of sitting human body,and the vibration response characteristics of the sitting human body under vertical coupling action of the sitting human body-vehicle-track system are analyzed.This research provides an effective model reference and theoretical basis for the ride comfort analysis and dynamic performance optimization of rail vehicles.
作者
于曰伟
赵雷雷
周长城
YU Yuewei;ZHAO Leilei;ZHOU Changcheng(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2022年第16期290-300,共11页
Journal of Mechanical Engineering
基金
山东省自然科学基金(ZR2021QE082,ZR2020ME127)
博士科研启动基金(420096)资助项目
关键词
轨道车辆
人车耦合
动力学建模
耦合特性
影响分析
railway vehicle
human vehicle coupling
dynamic modeling
coupling characteristics
influence analysis
