• CN:11-2187/TH
  • ISSN:0577-6686

›› 2002, Vol. 38 ›› Issue (9): 77-82.

• 论文 • 上一篇    下一篇

径向可倾瓦轴承的热弹流润滑分析

常秋英;孟永钢;温诗铸;杨沛然   

  1. 清华大学摩擦学国家重点实验室;青岛建筑工程学院
  • 发布日期:2002-09-15

TEHL ANALYSIS OF TILTING-PAD JOURNAL BEARINGS WITH NEWTON-RAPHSON METHOD

Chang Qiuying;Meng Yonggang;Wen Shizhu;Yang Peiran   

  1. Tsinghua University Qingdao Institute of Architecture and Engineering
  • Published:2002-09-15

摘要: 用Newton-Raphson法一次性求出了所有瓦块的压力分布和轴心的位置,用步进扫描法对轴承进行了三维温度场分析,用20节点有限元法构造了瓦块的压力变形矩阵和热变形矩阵。

关键词: Newton-Raphson法, 径向可倾瓦轴承, 热弹性流体动力润滑

Abstract: Thermoelastohydrodynamic lubrication (TEHL) analysis is presented to investigate the static performance of tilting-pad journal bearings. Completely numerical solution is obtained. The Newton-Raphson method is employed to predict the bearing characteristics of the hydrodynamic pressure,the eccentricity and the pad attitude angles simultaneously. For the temperature calculation 3-D energy equations for the fluid under each pad and 3-D heat transfer equations for the pads are solved using a sequential sweeping method. The elastic deformation and thermal expansion of each pad are calculated with the 20-node iso-parameter finite element method. The results show that the elastic deformation is not so important as the thermal expansion.

Key words: Tilting-pad journal bearing Thermoelastohydrodynamic Newton-Raphson method

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