Theory of viscoelastic lubrication |
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| Affiliation: | 1. DII, Universitá del Salento, 73100 Monteroni-Lecce, Italy;2. Peter Grünberg Institut-1, FZ-Jülich, 52425 Jülich, Germany;1. Université de Lyon, INSA-Lyon, LaMCoS UMR CNRS 5259, F69621 Villeurbanne, France;2. SNECMA, Centre de Villaroche, 77550 Moissy Cramayel, France;1. Procter and Gamble, Gillette, Greater London Innovation Centre, 452 Basingstoke Rd, Reading RG2 0QE, UK;2. Department of Mechanical Engineering Sciences, Faculty of Engineering and Physical Sciences, University of Surrey, Surrey, Guildford GU2 7XH, UK;1. Division of Food Sciences, Sutton Bonington Campus, University of Nottingham, Leicestershire LE12 5RD, UK;2. Biopolymer Solutions Ltd, Sutton Bonington Campus, University of Nottingham, Leicestershire LE12 5RD, UK;1. Department of Mechanical and Electrical Engineering, Ocean University of China, Qingdao, 266100, China;2. Key Laboratory of Ocean Engineering of Shangdong Province, Ocean University of China, Qingdao, 266100, China;3. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore |
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| Abstract: | We study the lubricated (wet) contact mechanics of a smooth hard cylinder sliding on a randomly rough nominally flat surface of a linear viscoelastic solid. We calculate the rolling and sliding friction, and study the transition from the boundary lubrication to the elasto-hydrodynamic lubrication regime. For the viscoelastic contact the minimum (average) separation does not monotonically increase with the sliding velocity, and the Stribeck curve exhibits new structures not shown for elastic solids. |
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| Keywords: | Soft contacts Rubber friction Viscoelasticity Roughness |
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