By Ming Qiu, Long Chen, Yingchun Li, Jiafei Yan
By concentrating on the speculation and methods of tribological layout and trying out for bearings, this e-book systematically studies the most recent advances in functions for this box. It describes complicated tribological layout, concept and techniques, and gives sensible technical references for investments in bearing layout and production. The theories, equipment and instances during this booklet are mostly derived from the sensible engineering event received and learn carried out through the writer and her workforce because the 2000s. The e-book comprises educational papers, technical reviews and patent literature, and gives a helpful advisor for engineers excited by bearing design.
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Additional resources for Bearing Tribology: Principles and Applications
Example text
China Machine Press, Beijing Halling J (1975) Principles of tribology. McMillan Press Ltd Quan Y (1994) Engineering tribology. Zhejiang University Press, Hangzhou Xie Y, Zhang S (2009) Research on development and present situation of tribology science and engineering application. Higher Education Press, Beijing Zhang J (1993) Wear and antiwear technology. Tianjin Science and Technology Translation Publishing Company, Tianjin Esmein A (1985) Manual of rolling bearing design and application. Huazhong Institute of Technology Press, Wuhan Chen L, Xie T, Xia X (2010) Rolling bearing application technology.
If the plowing effect is ignored, Eq. 9) becomes F ¼ Asb ¼ W sb rs ð3:10Þ 46 3 Mechanism of Bearing Friction and Wear Then the friction coefficient f ¼ F sb ultimate shear strength of soft material ¼ ¼ W rs compressive yield limit of soft material ð3:11Þ Above is the simple adhesion theory. According to the Eq. 2. 5 and much higher in vacuum. Therefore Bowden et al. put forward to the modified adhesive theory. 2. Modified adhesive theory According to the simple adhesive theory, only compressive yield limit of σs is considered when analyzing the actual contact area, and only shear strength limit of τb is considered for calculating friction force.
Fig. 1. 1 can be introduced to amplify the value of f [1]. If the adhesive effect and plowing effect can be considered simultaneously, the friction force consists of the shear force and plowing force for sliding of a single asperity, namely, that F = Aτb + Sσs So the friction coefficient is f ¼ F Asb þ Srs sb 2 ¼ ¼ þ cot h W Ars rs p ð3:24Þ For most machining surfaces, the angle of asperities θ is bigger. The second item on the right in the Eq. 24) is small, so the plowing effect can be ignored, thus Eq.