外文翻譯--對圓柱滾子軸承的滾子歪斜的潤滑機理研究（英文）

1、Full Terms however, the shear sliding is lowin cylindrical roller bearings. Therefore, an isothermal Newto-nian EHL solution without sliding is considered in this article, al-though the Newtonian simplicity sometimes ma

2、y exaggerate thepressure spike to some extent.MATHEMATICAL MODELFigure 1 shows the simplified contact model of a roller–race,where, x is along the entrainment direction before roller skew, yis the axial direction of the

3、roller before the roller skew, and z isthe radial load direction of the roller. In the present study, it wasassumed that roller skew occurs on the x–y plane and roller tiltoccurs on the y–z plane.Velocity AnalysisNote th

4、at both the roller and races had dub-off end profilemodifications in cylindrical roller bearings. As the roller becameskewed, the contact pressure at the end parts of the contact zoneincreased in the roller–outer race co

5、ntact, whereas the contactpressure at the center of the contact increased in the roller–innerrace contact. Typical geometric interactions as a function of skewangle, ?, can be predicted for roller–inner race and roller–o

6、uterrace contacts. The contact regions for roller and races are shownin Fig. 2; Fig. 2a shows the roller to inner race contact and Fig. 2bshows the roller to outer race contact. y? is along the roller’s axialdirection af

7、ter the roller skew, and x? is along the entrainmentdirection after the roller skew.Considering only inner race rotation in rolling element bear-ings, ni = n, ni is the rotational speed of the inner races, and n isthe ro

8、tational speed of the shaft. The orbital rotational speed ofthe roller (Harris (9)) is given to benm=ni(1 ? γ)/2, [1]Fig. 1—Schematic diagram of roller–race contact.Downloaded by [University of Newcastle, Australia] at 2