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作者:

Liu, Zhi-feng (Liu, Zhi-feng.) (学者:刘志峰) | Zhan, Cheng-peng (Zhan, Cheng-peng.) | Cheng, Qiang (Cheng, Qiang.) (学者:程强) | Zhao, Yong-sheng (Zhao, Yong-sheng.) (学者:赵永胜) | Li, Xiao-yan (Li, Xiao-yan.) | Wang, Yi-da (Wang, Yi-da.)

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摘要:

Hydrostatic pads are key components of a constant flow compensation hydrostatic rotary table. The tilt and thermal effects due to the partial load, the manufacturing errors and the friction must be considered. However, designers are more likely inclined to ignore these effects. In this work, the coupled characteristics of the tilt and thermal effects are studied. A coupled mathematical model to calculate the bearing properties of the pads is built. This model takes into consideration of tilt and thermal effects and is used to solve the flow problem by the finite difference method. The characteristics of the oil pad, including, the recess pressures, the load carrying capacity and the damping coefficients, are obtained and the tilt and thermal effects are analyzed. It is observed that the tilt has a tremendous impact on the bearing characteristics of the hydrostatic pad. The recess pressure, the load carrying capacity and the stiffness are reduced by 50% and the pressure distribution and the temperature distribution of the oil film also change significantly. When the pads work under a tilt operation, a larger land width is better for its bearing properties. It is also observed that the thermal effect is significant and cannot be ignored.

关键词:

tilting Reynolds equations thermo-hydrodynamic lubricant constant flow compensation

作者机构:

  • [ 1 ] [Liu, Zhi-feng]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Zhan, Cheng-peng]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Cheng, Qiang]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Zhao, Yong-sheng]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Xiao-yan]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Wang, Yi-da]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Cheng, Qiang]Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Peoples R China

通讯作者信息:

  • 程强

    [Cheng, Qiang]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China;;[Cheng, Qiang]Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Peoples R China

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来源 :

JOURNAL OF HYDRODYNAMICS

ISSN: 1001-6058

年份: 2016

期: 4

卷: 28

页码: 585-595

2 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:166

中科院分区:4

被引次数:

WoS核心集被引频次: 19

SCOPUS被引频次: 22

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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