摘要
履带车辆负重轮动载荷的大小直接影响车辆附着性能及牵引性能。在计及履带车辆前后轮输入变时差相关性和左右轮输入相干性的基础上,建立履带车辆整车负重轮动载荷理论估算模型。基于多体动力学软件RecurDyn,建立履带车辆多体动力学模型并进行模型验证。基于履带车辆负重轮动载荷理论估算模型及履带车辆多体动力学模型,分别开展行驶速度、路面不平度及履带板参数对负重轮动载荷的影响分析。研究表明:随着行驶速度的提高和路面不平度的增大,负重轮动载荷及动载系数近似线性增大;随着履带板宽度的增大,负重轮动载荷先减小后增大;随着履带板厚度的增大,负重轮动载荷呈线性增大。该研究结论为履带车辆附着性能分析以及结构优化设计提供了理论基础。
The road wheels dynamic load of tracked vehicles directly affects the adhesion and traction performance.A theoretical estimation model of the road wheels dynamic load is established according to the correlation with variable time lag between front and rear wheels,and the coherence between the left and right wheels.Based on multi-body dynamics software RecurDyn,a multi-body dynamics model of tracked vehicles is established and then the model verification is performed.On the basis of the theoretical estimation model and the multi-body dynamics model,the effects of driving speed,road roughness and track shoe parameters on the road wheels dynamic load are analyzed.The results shows that with the increase of driving speed and road roughness,the road wheels dynamic load and dynamic load coefficient linearly increase.The road wheels dynamic load first decreases and then increases with the increase of track shoes width.As the track shoes thickness increases,the road wheels dynamic load linearly increases.The conclusion provides a theoretical basis for the analysis of adhesion performance,structural design and optimization of tracked vehicles.
作者
覃凌云
杨书仪
陈哲吾
凌启辉
QIN Lingyun;YANG Shuyi;CHEN Zhewu;LING Qihui(School of Mechanical Engineering,Hunan University of Science and Technology Xiangtan,411201,China)
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2021年第4期652-659,826,827,共10页
Journal of Vibration,Measurement & Diagnosis
基金
湖南省研究生科研创新资助项目(CX2018B668)。
关键词
履带车辆
路面不平度
动载荷
变时差相关
多体动力学仿真
tracked vehicle
road roughness
dynamic load
variable time lag correlated
multi-body dynamics simulation
作者简介
第一作者:覃凌云,男,1993年3月生,硕士生。主要研究方向为多体动力学仿真和结构优化设计。E-mail:qly15773283711@163.com;通信作者:杨书仪,女,1972年12月生,教授、博士生导师。主要研究方向为机械动力学和机电控制。E-mail:ysy822@126.com。
