摘要
油气弹簧作为车辆油气悬架的重要部分对保障车辆行驶过程中平顺性和操纵稳定性具有重要的作用,针对车辆悬架用油气弹簧的刚度特性建立了相应的力学模型,并开展了数值计算研究,分析了气体变化系数,气室初始压力,气室初始高度和活塞杆内径4个参数对油气弹簧刚度的影响。结果表明气体变化系数对于油气弹簧刚度的影响比较大;刚度会随着活塞杆与外缸体相对位移的增大而增大,研究成果对优化油气弹簧设计具有重要意义。
Hydro-pneumatic spring,as an important part of vehicle hydro-pneumatic suspension in the process of security vehicle ride comfort and handling stability,plays an important role.The corresponding mechanics model for the vehicle suspension with hydro-pneumatic spring stiffness characteristics was established,and numerical calculation was carried out.The influence of four parameters of the gas polytropic index,initial pressure of air chamber,air chamber initial height and diameter of the piston rod on hydro-pneumatic spring stiffness was analyzed.The results show that:the influence of gas polytropic index on the hydro-pneumatic spring stiffness is significant;The stiffness increases with the enlargement of relative displacement of piston rod with the cylinder.The research is of great significance to optimize the design of the hydro-pneumatic springs.
作者
王冰
Wang Bing(Department of Mechanical and Electrical Engineering,Yantai College of Automotive Engineering(Yantai,Shandong,265500,China))
出处
《小型内燃机与车辆技术》
2018年第6期29-32,共4页
Small Internal Combustion Engine and Vehicle Technique
关键词
油气弹簧
刚度性能
数值计算
特征参数
Hydro-pneumatic spring
Stiffness properties
Numerical calculation
Characteristic parameters
