欢迎访问机床与液压官方网站!

咨询热线:020-32385312 32385313 RSS EMAIL-ALERT
间隙密封液压缸的UDF有限元分析
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    应用Fluent软件中的UDF方法,对间隙密封伺服液压缸进行动态仿真,并通过编程对温度、压力与液压油黏度之间的关系进行定义,分析了活塞周期运动过程中,温黏,压黏对液压缸间隙流场的影响。结果表明:间隙流场中流体的平均温度逐渐升高使得黏度发生变化;温度升高时,液压油黏度降低,流体阻力减小,液压降减小,反之液压降增大;黏度不断降低,间隙泄漏量会不断升高,但泄漏量增加的速度会逐渐变慢,最终达到一种稳定的状态;当黏度变化时,间隙流场内壁面壁面摩擦力大小随时间逐渐增大,当液压缸运行到一定时间,内壁面壁面摩擦力大小都将趋于稳定状态。

    Abstract:

    The method of UDF in Fluent software was used for the dynamic simulation of seal clearance servo hydraulic cylinder. The relationship between temperature, pressure and the hydraulic oil viscosity was defined through programming, and the influence of piston periodic motion, temperature as well as pressure on interstitial fluid flow of the hydraulic cylinder clearance was analyzed. The results show that: the oil viscosity changes with the average temperature of fluid increased gradually. The rising in temperature, the decrease is in hydraulic oil viscosity, the fluid resistance and hydraulic pressure reduced as well, on contrary, the hydraulic pressure is increased. Viscosity decreases continuously, leakage flow rate will continue to rise, but the increasing of leakage speed will be slow down gradually, finally reached a steady state. When the viscosity changes, the interstitial fluid field inner wall friction is increased gradually along with time. When the hydraulic cylinder running up to a certain time, inner wall friction will tend to be stable state. 

    参考文献
    相似文献
    引证文献
引用本文

周文驰,傅连东,苏杰.间隙密封液压缸的UDF有限元分析[J].机床与液压,2015,43(3):179-181.
.[J]. Machine Tool & Hydraulics,2015,43(3):179-181

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2015-06-17
  • 出版日期: