Effect of driving conditions and suspension parameters on dynamic load-sharing of longitudinal-connected air suspensions  

作　　者：CHEN YiKai HE Jie KING Mark CHEN WuWei ZHANG WeiHua 

机构地区：[1]School of Transportation Engineering,Hefei University of Technology [2]Traffic Management Research Institute of the Ministry of Public Security [3]School of Transportation,Southeast University [4]Centre for Accident Research and Road Safety-Queensland,Queensland University of Technology,Kelvin Grove 4059,Australia [5]School of Mechanical and Automotive Engineering,Hefei University of Technology

出　　处：《Chinese Science Bulletin》2013年第7期666-676,共11页

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 51078087, 51178158, and 51075112);the Natural Science Foundation of Anhui Province (Grant No. 11040606Q39);the Fundamental Research Funds for the Central Universities (Grant Nos. 2012HGQC0015 and 2011HGBZ0945)

摘　　要：The objective of this research was to investigate the effects of driving conditions and suspension parameters on dynamic load-sharing of longitudinal-connected air suspensions of a tri-axle semi-trailer.A novel nonlinear model of a multi-axle semi-trailer with longitudinal-connected air suspension was formulated based on fluid mechanics and thermodynamics and was validated through test results.The effects of driving conditions and suspension parameters on dynamic load-sharing and road-friendliness of the semi-trailer were analyzed.Simulation results indicate that the road-friendliness metric-DLC(dynamic load coefficient) is not always in accordance with the load-sharing metric-DLSC(dynamic load-sharing coefficient).The effect of employing larger air lines and connectors on the DLSC optimization ratio gives varying results as road roughness increases and as driving speed increases.When the vehicle load reduces,or the static pressure increases,the DLSC optimization ratio declines monotonically.The results also indicate that if the air line diameter is always assumed to be larger than the connector diameter,the influence of air line diameter on load-sharing is more significant than that of the connector.The objective of this research was to investigate the effects of driving conditions and suspension parameters on dynamic load-sharing of longitudinal-connected air suspensions of a tri-axle semi-trailer. A novel nonlinear model of a multi-axle semi-trailer with longitudinal-connected air suspension was formulated based on fluid mechanics and thermodynamics and was validated through test results. The effects of driving conditions and suspension parameters on dynamic load-sharing and road-friendliness of the semi-trailer were analyzed. Simulation results indicate that the road-friendliness metric-DLC （dynamic load coefficient） is not always in accordance with the load-sharing metric-DLSC （dynamic load-sharing coefficient）. The ef- fect of employing larger air lines and connectors on the DLSC optimization ratio gives varying results as road roughness in- creases and as driving speed increases. When the vehicle load reduces, or the static pressure increases, the DLSC optimization ratio declines monotonically. The results also indicate that if the air line diameter is always assumed to be larger than the con- nector diameter, the influence of air line diameter on load-sharing is more significant than that of the connector.

关 键 词：空气悬架 负载共享 悬挂参数 驾驶条件 多轴半挂车 负载分担 管路直径 纵向连接 

分 类 号：U463.334.2[机械工程—车辆工程] TP301.6[交通运输工程—载运工具运用工程]