Forthcoming articles

International Journal of Reliability and Safety

International Journal of Reliability and Safety (IJRS)

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International Journal of Reliability and Safety (1 paper in press)

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  • Time-varying reliability analysis method for micropolar fluid elastohydrodynamic lubrication   Order a copy of this article
    by Yourui Tao, Mingyang Dai 
    Abstract: Reliable lubrication of sliding bearings means that the roller and bearing are separated by the oil film, resulting in less wear and longer life. During the bearing lubrication process, some particle impurities are produced due to wear and other reasons. Generally, the particle size in the micropolar fluid gradually increases with time. Moreover, velocity and load of bearing are uncertain. Therefore, it is very important to consider the time-varying reliability of bearing lubrication. In this paper, a time-varying reliability analysis method for micropolar fluid elastohydrodynamic lubrication is proposed based on response surface method and first passage method. The response surface method is applied to construct the response function of minimum oil film thickness, and the reliability model of lubrication is developed by the film thickness ratio. Then, the reliability of lubrication is calculated by the first passage method. The numerical results show that both the accuracy and efficiency of the proposed method are high.
    Keywords: micropolar fluid; lubrication reliability; response surface method; first passage method.