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兵工学报 ›› 2017, Vol. 38 ›› Issue (7): 1255-1262.doi: 10.3969/j.issn.1000-1093.2017.07.002

• 论文 • 上一篇    下一篇

油气弹簧主活塞斯特封泄漏流量计算与仿真研究

桂鹏, 毛明, 陈轶杰, 郭建娟, 高晓东, 宁丹   

  1. (中国北方车辆研究所 底盘部件技术部, 北京 100072)
  • 收稿日期:2016-11-08 修回日期:2016-11-08 上线日期:2018-04-12
  • 作者简介:桂鹏(1992—),女,硕士研究生。 E-mail: guipeng0101@163.com
  • 基金资助:
    国家自然科学基金项目(51305410)

Calculation and Simulation of Leakage of Stepseals in Main Piston of Hydro-pneumatic Springs

GUI Peng, MAO Ming, CHEN Yi-jie, GUO Jian-juan, GAO Xiao-dong, NING Dan   

  1. (Department of Chassis Components Technology, China North Vehicle Research Institute, Beijing 100072, China)
  • Received:2016-11-08 Revised:2016-11-08 Online:2018-04-12

摘要: 针对油气弹簧主活塞斯特封宽温域条件下的工作稳定性问题,基于材料力学及流体动力学分析与计算,建立了流体动密封数学模型,推导出了斯特封泄漏流量的理论计算公式;运用有限元模型获取密封间隙处的油膜压力数据,研究了工作温度、往复运动速度、预压缩率及沟槽尺寸对斯特封泄漏流量的影响规律。结果表明:同等工况下,往复运动速度增加、预压缩率减小、沟槽宽度或深度增大都会增加斯特封的泄漏流量;在材料许用温域范围内,随着工作温度的升高,斯特封的泄漏流量增加。

关键词: 兵器科学与技术, 斯特封, 泄漏流量, 油气弹簧

Abstract: To study the working stability of Stepseals in main piston of hydro-pneumatic springs in a wide range of temperature, a fluid dynamic seal model is established based on mechanics of materials and hydrodynamics. The theoretical formula of Stepseals leakage is deduced. The effects of temperature, piston velocity, pre-compression ratio and groove dimensions on leakage are analyzed using film pressure data from finite element models. Results show that the increase in piston velocity, the decrease in pre-compression ratio and the increase in groove dimensions lead to more leakage of Stepseals, and higher temperature also causes more leakage in allowable temperature range. Key

Key words: ordnancescienceandtechnology, Stepseal, leakage, hydro-pneumaticspring

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