摘要
研究目的:为分析悬挂式单轨车辆通过曲线时的横向稳定性问题,基于国内某型悬挂式单轨系统,采用多体动力学软件Universal Mechanism建立60自由度的车-线系统动力学模型,以车体和摇枕为主要研究对象,探索车辆横向偏角在不同减振装置参数下的变化特性。研究结论:(1)横/垂向减振器阻尼、空气弹簧水平/垂向阻尼参数的变化对悬挂式单轨车体和摇枕的横向晃动几乎没有抑制作用;(2)降低空气弹簧水平刚度有利于减缓车辆的横向晃动,而减小垂向刚度会进一步增大晃动的可能性;(3)若考虑在摇摆减振器处并联钢弹簧,其刚度的增加有利于减小车体和摇枕的最大横向偏角,而摇摆减振器阻尼的增大则侧重于减少车体和摇枕的振动周期数,因此应综合考虑摇摆减振器阻尼、刚度参数设计,以有效提升旅客舒适度体验;(4)本研究成果可为悬挂式单轨车辆悬挂参数优化及线路设计提供一定的参考。
Research purposes:In order to analyze the lateral stability of suspended monorail vehicle when it passes through the curve based on the domestic suspended monorail system,the vehicle-line dynamics model with 60 degrees of freedom is set up by using the multi-body dynamics software Universal Mechanism.Taking the car body and bolster as the main research objects,the variation characteristics of the lateral deflection angle of the vehicle under different damping device parameters are explored.Research conclusions:(1)The variation of lateral and vertical damper damping and air spring horizontal/vertical damping have little inhibition on the body and bolster’s lateral swing of suspended monorail.(2)Reducing the horizontal stiffness of air spring is conductive to slowing down the lateral oscillation of vehicle,while decreasing the vertical stiffness can further increase the possibility of oscillation.(3)If considering parallel steel spring at the swing damper,its increasing stiffness is beneficial to reduce the maximum lateral deflection angle of the body and bolster,while increasing damper is focused on reducing the number of vibration periods.Therefore,the damping and stiffness parameters of swing damper should be considered comprehensively to improve the passenger comfort experience effectively.(4)The research results can provide some references for the suspension parameters optimization and line design of suspended monorail vehicles.
作者
谢毅
寇峻瑜
余浩伟
肖杰
罗圆
XIE Yi;KOU Junyu;YU Haowei;XIAO Jie;LUO Yuan(China Railway Eryuan Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China)
出处
《铁道工程学报》
EI
北大核心
2019年第12期35-40,共6页
Journal of Railway Engineering Society
基金
四川省科技支撑计划(2016GZ0337,2018GZ0358)
中铁二院科研项目(KYY2018073)
关键词
悬挂式单轨
悬挂参数
横向稳定性
振动周期
减振器
suspended monorail
suspension parameter
lateral stability
vibration period
damper
