Abstract
Based on the couple-stress theory, the elastohydrodynamic lubrication (EHL) contact is analyzed with a consideration of the size effect. The lubricant between the contact surface of a homogeneous coated half-plane and a rigid punch is supposed to be the non-Newtonian fluid. The density and viscosity of the lubricant are dependent on fluid pressure. Distributions of film thickness, in-plane stress, and fluid pressure are calculated by solving the nonlinear fluid-solid coupled equations with an iterative method. The effects of the punch radius, size parameter, coating thickness, slide/roll ratio, entraining velocity, resultant normal load, and stiffness ratio on lubricant film thickness, in-plane stress, and fluid pressure are investigated. The results demonstrate that fluid pressure and film thickness are obviously dependent on the size parameter, stiffness ratio, and coating thickness.
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Citation: SU, J., SONG, H. X., KE, L. L., and AIZIKOVICH, S. M. The size-dependent elastohydrodynamic lubrication contact of a coated half-plane with non-Newtonian fluid. Applied Mathematics and Mechanics (English Edition), 42(7), 915–930 (2021) https://doi.org/10.1007/s10483-021-2744-7
Project supported by the National Natural Science Foundation of China (Nos. 11902217, 11725207, and 12011530056) and the Russian Foundation for Basic Research (No. 20-58-53045-GFEN-a)
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Su, J., Song, H., Ke, L. et al. The size-dependent elastohydrodynamic lubrication contact of a coated half-plane with non-Newtonian fluid. Appl. Math. Mech.-Engl. Ed. 42, 915–930 (2021). https://doi.org/10.1007/s10483-021-2744-7
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DOI: https://doi.org/10.1007/s10483-021-2744-7