Design and dynamic analysis of the micro-suspended monorail  

微轨设计与动力学分析

作　　者：Jiang Yongzhi Wu Pingbo Zeng Jing Wei Lai Wang Xing He Qinglie Wang Shuai 蒋咏志;邬平波;曾京;魏来;王星;何庆烈;王帅(西南交通大学牵引动力国家重点实验室,成都610031;中国测试技术研究院,成都610021)

机构地区：[1]State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031,China [2]National Institute of Measurement and Testing Technology, Chengdu 610021, China

出　　处：《Journal of Southeast University(English Edition)》2020年第1期14-23,共10页东南大学学报（英文版）

基　　金：The National Key Research and Development Program of China(No.2018YFB1201702);the Program of State Key Laboratory of Traction Power(No.2018TPL_T11);the Fundamental Research Funds for the Central Universities(No.2682017CX009).

摘　　要：A 20 degree of the freedom model of the micro-suspended monorail is established to analyze a new type of the vehicle system named micro-suspended monorail.The formula of the tire is established by using the magic formula.Through the modal analysis of the vehicle,the modes of the vehicle are obtained,and resonance has little effect on the vehicle.When the vehicle moves in a right turn curve,it yaws in the clockwise direction.Under the action of the guidewheel(stable wheel)force,the front bogie yaws clockwise but the rear one yaws counterclockwise.Moreover,the two bogies and the car body roll during the curve passing process of the vehicle.When the vehicle speed is high enough,the left drive wheel will derail and the anti-overturning moments are provided by the stable wheels.Then,the car body yaws in the counterclockwise direction when it moves out of the curve.In the simulation of the vehicle passing the curve,the clearance between the guide wheel and rail surface will lead to a fatal impact on the bogie.At the same time,the dynamic response of the vehicle under the crosswind is tested.The vehicle will not overturn due to the crosswind.Finally,the collision of adjacent vehicles is analyzed.The results show that there is an intermittent collision force between two vehicles due to the vehicle's non synchronous pitch motion.为研究一种名为微轨的新型车辆系统,建立了一个20自由度的微轨模型.利用Magic公式建立了轮胎公式.通过对车辆的模态分析,得到车辆的各阶模态,并得知共振对车辆影响较小.当车辆在右转弯道上行驶时,会顺时针方向摇头.在导向轮(稳定轮)力作用下,前转向架顺时针摇头,后转向架逆时针摇头.此外,2个转向架和车体在车辆曲线通过过程中发生侧滚.当车速足够高时,左驱动轮脱轨,稳定车轮提供抗倾覆力矩.然后,车身偏离弯道时会逆时针方向摇头.在对车辆过弯道的仿真中,导向轮轨表面的间隙会导致转向架产生巨大的致命冲击.同时,测试了微轨在侧风作用下的动力学响应,车辆不会因为侧风而发生倾覆.最后,对相邻车辆的碰撞做出了分析,结果表明,车辆碰撞过程,由于车辆的非同步俯仰运动,两辆车之间存在间歇性碰撞力.

关 键 词：micro-suspended monorail dynamic model magic formula shock coupler force 

分 类 号：U270.1[机械工程—车辆工程] U232[交通运输工程—载运工具运用工程]