温升对油气悬架刚度的影响  

Influence of Temperature Rise on Stiffness of Hydro-pneumatic Suspension

作　　者：李阁强[1] 崔国庆 毛波 冯勇 LI Ge-qiang;CUI Guo-qing;MAO Bo;FENG Yong(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang,Henan 417003;Shandong Wantong Hydraulic Co.,Ltd.,Rizhao,Shandong 262313)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]山东万通液压股份有限公司,山东日照262313

出　　处：《液压与气动》2021年第5期127-131,共5页Chinese Hydraulics & Pneumatics

基　　金：山东省重点研发计划(2019GHZ013);河南省高等学校重点科研项目(21A460012)。

摘　　要：针对油气悬架温度随工作时间升高,从而改变油气悬架自身特性的问题,以某型号油气悬架为研究对象,根据流体力学和热力学理论,建立油气悬架的数学模型,并利用Simulink进行仿真。分别在不同温度下进行油气悬架的台架试验,从而得到不同温度的油气悬架位移特性曲线。对比仿真和试验结果,验证了数学模型的精确性;另外,研究了温升对油气悬架刚度特性的影响。结果表明,随温度升高油气悬架的刚度明显升高。Aiming at the problem that the temperature of the hydro-pneumatic suspension increases with the working time,which changes the characteristics of the hydro-pneumatic suspension,a certain type of hydro-pneumatic suspension is taken as the research object.Based on the knowledge of fluid mechanics and thermodynamics,a theoretical mathematical model of the hydro-pneumatic suspension is established,and Simulink is used for simulation.The bench test of the hydro-pneumatic suspension is carried out at different temperatures to obtain the displacement characteristic curves at different temperatures.The simulation results are compared with the bench test results to verify the accuracy of the mathematical model.In addition,the influence of temperature rise on the stiffness characteristics of the hydro-pneumatic suspension is studied.The results show that the stiffness of the hydro-pneumatic suspension increases significantly with the increase of temperature.

关 键 词：油气悬架 温升 刚度特性 

分 类 号：TH137[机械工程—机械制造及自动化] TH138