By Ming Qiu, Long Chen, Yingchun Li, Jiafei Yan
By concentrating on the speculation and strategies of tribological layout and checking out for bearings, this e-book systematically reports the newest advances in purposes for this box. It describes complex tribological layout, conception and strategies, and gives useful technical references for investments in bearing layout and production. The theories, tools and instances during this publication are mostly derived from the sensible engineering event won and examine carried out via the writer and her workforce because the 2000s. The ebook contains educational papers, technical studies and patent literature, and gives a worthy advisor for engineers concerned with bearing design.
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Extra resources for Bearing Tribology: Principles and Applications
Flat peak or leptokurtic degree of data distribution is known as kurtosis that indicates the leptokurtic degree of distribution curve. The sampling interval size has a signiﬁcant influence on plotting histogram and distribution curve when anglicizing the surface topography parameters. In order to represent the relationship between adjacent contours and changing trend of the contour curve, another statistical parameter, namely autocorrelation function, can be used. Autocorrelation function can be decomposed into two components as attenuation and oscillation.
8 Contact pressure distribution between two cylinders rﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃ x2 1À 2 a ð2:5Þ 20 2 Bearing Surface Contact Fig. 9 Contact pressure distribution for single cylinder From Hertz formula, rﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃ 4WR a¼ pLE 0 ð2:6Þ 1 1 1 R1 þ R2 ¼ þ ¼ R R1 R2 R1 R2 ð2:7Þ 1 1 À c21 1 À c22 ¼ þ ; 0 E E1 E2 ð2:8Þ where: where E1 and E2 are, respectively, the elasticity modulus of two contact cylinder materials; c1 and c2 are, respectively, the Poisson ratio of two contact cylinder materials. 67 a, where a is the half-width of contact line.
The contacts of radial plain bearing generally belong to line contact due to the curvature difference in radial direction. If the curvature difference is not obvious, it can also be understood as the surface contact in the circumferential direction. Ordinary split bearing is made of bearing cover, housing, split axle bush and bolt. Axle bush is an important part contacting with shaft neck directly. Trapezoid tenon mouth needs to be processed on the section surface of the bearing cover and housing for easy alignment.