• CN:11-2187/TH
  • ISSN:0577-6686

›› 1987, Vol. 23 ›› Issue (2): 38-46.

• 论文 • 上一篇    下一篇

关于线接触弹流润滑状态图的应用研究

张祖明   

  1. 北京机械工业管理学院
  • 发布日期:1987-03-01

THE APPLIED INVESTIGATION OF THE LINE CONTACT E. H. D. LUBRICATION STATUS DIAGRAM

Zhang Zuming   

  1. Beijing Management Institute of Mechanical Industry
  • Published:1987-03-01

摘要: 本文从理论上指出Hooke润滑状态图在实践应用上存在两大问题:一是它采用了异于Dowson方程的Greenwood公式、二者之间的系数与指数差异悬残;二是它漏划了Grubin方程,故Hooke状态图不适合于工程计算中应用。为解决此矛盾、本文提出了一张适合工程应用的新颖的润滑状态图,它包含了当今著名的五种线弹流润滑理论,通过理论分析导出了它们之间的边界曲线方程、划分了五个区域(如图5-2),提出了如何消除相邻润滑理论在交界区的膜厚计算误差问题。最后举例说明润滑理论的选择和最小膜厚的计算方法。为合理选择线弹流润滑理论和计算最小膜厚提供了理论依据与具体步骤。近30年来国际上对光滑面的线弹流理论,尤其在等温、稳定载荷和充分润滑的条件下的膜厚计算理论已比较成熟;但是付诸实践应用、尚存在一些问题。例如当前国际上的几种润滑状态图和公认的润滑理论(尤其是Dowson理论)的系数或指数存在矛盾。本文意图旨在解决这一矛盾。

Abstract: By theoretical analysis this Hake's paper has pointed out the two shortcomings in the practical application of C. J. Hooke's lubrication status diagram the Greenwood equation which is different from the D. Dowson's equation has been employed and that the two equations' coefficients and exponents are very different. The second is that in Hooke's diagram there isn't any connection with A. N. Grubin's equation. With the two short-comings it is impossible to choose and apply line contact E. H. D. lubrication theory to the practical application. In order to solve this problem, the paper has offered a new E. H. D. lubrication status diagram (Fig. 5-2) that contains five currently well-known line contact E. H. D. lubrication theory. Through analysing the five modern line contact E. H. D. theories the stable boundary curve has been derived. Meanwhile the method of eliminating the calculating error of boundary area oil film thickness has been provided. Finally, the calculating rule of minimum oil film thickness has been carried out and an example is given. Therefore, the theoretical basis for properly choosing Line contact E. H. D. theories (esp. D. Dowson's theory) and the design stage for calculating minimum oil, film thickness are provided.