第45卷第5期 2009年5月
机械工程学报
JOURNALOFMECHANICALENGINEERING
DOI：10.3901/JME.2009.05.290
单气室油气悬架的仿真与试验研究
甄龙信1张文明2
(1.燕山大学车辆与能源学院秦皇岛066004；
2.北京科技大学土木与环境工程学院北京100083)
Vol.45
No.5
May
2009
压力下，对单气室油气悬架进行台架试验研究，分别测得油气悬架的输出力和缸篇相对于活塞杆的位移。应用多体动力学仿真软件ADAMS建立单气室油气悬架的虚拟模型，将试验得到的位移与时间的关系曲线输入到虚拟模型进行仿真。将仿真得
精确性。分别将考虑密封摩擦和不考患密封摩擦的仿真结果与试验结果进行比较，证明考您密封摩操的油气悬架数学模型更精确，但密封摩擦对数学模型精度的影响在5%以下，如果粗略评价油气悬架的性能，密封摩擦可以忽略不计。
关键调：油气悬架数学模型参数修正密封摩擦中图分类号：U463.33
ResearchonSimulationandExperimentof
Hydro-pneumatic Suspension with Single Gas Cell
ZHENLongxin'ZHANGWenming
(1.School of Vehicle andEnergyEngineering,Yanshan University,Qinhuangdao066004;
2. School of Civil &Environment Engineering, University of Science and Technology Beijing, Beijing 100083) Abstract:By reference to the research experience and achievement of hydraulic damper, the nonlinear mathematic model of hydro-pneumatic suspension with single gas cell is set up, in which seal friction is included. Under different gas charging pressure, a hydro-pneumatic suspension with single gas cell is carried out, The output force of the suspension and displacement of cylinder block relative to piston are measured in test process, The virtual model of the hydro-pneumatic suspension is set up through ADAMS software. A simulation is performed by inputting the curve of displacement varying with time into the virtual model. Key parameters in mathematic model are revised by comparing the displacement character istic curve and velocity character istic curve of simulation with that of test, which testifies that the mathematic model is precise. Test results are respectively compared with simulation results including seal friction and that without seal friction, which shows that the mathematic model including seal friction is more precisc but the effect of seal friction on the precision of mathematic model is below 5 percent. The seal friction can be neglected if the performance of hydro-pneumatic suspension is evaluated roughly
Parameter revisedSeal friction
Key words: Hydro-pneumatic suspension Mathematic model
组件和减报器功能集于一体。油气悬架具有单位储
0
前言
油气悬架以油液传递压力，以情性气体(通常为
氮气)作为弹性介质，以油液流过活塞杆上的单向阀和阻尼孔产生的阻尼作用减振，将传统悬架的弹性
·北京科技大学与北京首钢重型汽车制造厂合作资助项目。20080526 收到初稿，20081213收到修改稿
能比大、结构紧凑、在车辆上容易布置等优点，并且其刚度特性接近理想的悬架刚度特性曲线，在国内外的工程车辆上得到了广泛的应用]。
自从油气悬架产生以来，在其技术开发、设计和制造方面，国外定性定量的研究比较全面，已有大量的成熟应用产品，如德国、美国、英国、日本及法国等，但有关油气悬架的具体研究报道很少。