期刊名称：International Journal of Energy and Environment
印刷版ISSN：2076-2895
电子版ISSN：2076-2909
出版年度：2017
卷号：8
期号：6
页码：557-566
出版社：International Energy and Environment Foundation (IEEF)
摘要：In this paper, the effect of Nano-lubrication on the dynamic coefficients of worn journal bearing has been studied. The analytical solution of time dependent Reynolds equation for short journal bearing (L/D<1) is presented to determine the dynamic coefficients of fluid film journal bearings. Dufrane wear model has been adopted to include the effect of worn geometry on the oil film thickness. Modified Krieger-Dougherty viscosity model have been employed to predict the relative viscosities of Nano-lubricant. The results show that the cross coupled stiffness coefficients Kxy decreases by 34% for a worn journal bearing with wear depth parameter of 0.2 while the damping coefficients Cxx and Cyy decrease by 9% and 13%.
