.... Deutsche Forschungsgemeinschaft 10.13039/501100001659 441889189 contact area contact mechanics surface asperities micro-tribology Graphical Abstract Figure 06 12 2023 01 05 2024 01 05 2024 06 06 2024 Contributed by the Tribology Division of ASME...

... = the number of contact cycles (fatigue life) p , p c = hydrodynamic and asperity contact pressure (Pa) p ¯ = dimensionless pressure, p ¯ = p / p H p H = maximum Hertzian pressure (Pa) q = heat flux density (W/m 2 ) R x , R y...

...Zhiqian Wang; Xingna Liu This paper studies elastic–plastic contact between Greenwood–Williamson (GW) rough surfaces, on which there are many asperities with the same radius whose height obeys the Gaussian distribution. A new plasticity index is defined as the ratio of the standard deviation...

.... Assoc. Editor: Alan Palazzolo. 19 03 2017 13 05 2018 Boundary lubrication Films Hydrodynamic lubrication Mixed lubrication Squeeze films Surface roughness Asperities Hydroviscous drive (HVD) is a new type of fluid power transmission, which transfers power with viscous...

... Wear Wear mechanisms Characterization Asperities Cavitation erosion is a sensitive issue for many components of hydraulic systems exposed to the action of high flow fluids and of vibrating components that are immersed in fluids. In order to increase the durability of hydraulic components...

...; published online May 14, 2018. Assoc. Editor: Stephen Boedo. 21 11 2017 13 04 2018 Piston rings Sliding Surface properties Surface roughness Wear Characterization Asperities The piston ring/cylinder bore tribosystem is of utmost importance for engine performance...

.... A numerical approach was developed on the basis of stochastic solution of mixed lubrication, which combined the Patir and Cheng's average flow model for calculation of the hydrodynamic pressure and the Kogut and Etsion's (KE) rough surface contact model for calculation of the asperity contact pressure...

...-related features of the contact interface. In particular, the break-free force distribution function of the Jenkins elements could be expressed in terms of height distribution of surface asperities. The model considered the contribution of elastically, elasto-plastically as well as plastically deformed...

... , for the dry contact [ 12 ]. When the surfaces slide/roll at a low speed or surface asperities penetrate the lubricant film, the solids are in direct contact with each other, which may mathematically result in a nonpositive film thickness H ≤ 0 according to Eq. (7) , and the pressure flow term...

.... , 2013 , “ The Effect of Multi-Scale Laser Textured Surface on Lubrication Regime ,” Appl. Surf. Sci. , 270 , pp. 58 – 63 . 10.1016/j.apsusc.2012.12.068 [7] Siripuram , R. B. , and Stephens , L. S. , 2004 , “ Effects of Deterministic Asperity Geometry on Hydrodynamic Lubrication...

... Wear mechanisms Characterization Asperities 22 10 2017 21 01 2018 Contributed by the Tribology Division of ASME for publication in the J OURNAL OF T RIBOLOGY . Manuscript received October 22, 2017; final manuscript received January 21, 2018; published online February 22, 2018...

... cavitation area due to surface roughness, which results in significant increment of asperity contacts, friction, and flash temperature. Besides, the effect of entrainment angle on film thickness will be weakened if the two surfaces operate under starved lubrication condition. Furthermore, the results show...

... studied the lateral contact (shoulder–shoulder contact) between upper and lower asperities in the elastic and elastic-perfectly plastic stages, which is neglected by other classical models. The normal force can be divided into a normal component and a tangential component when two asperities...

...Yuechang Wang; Ying Liu; Gaolong Zhang; Yuming Wang The simulated rough surface with desired parameters is widely used as an input for the numerical simulation of tribological behavior such as the asperity contact, lubrication, and wear. In this study, a simulation method for generating non...

... successfully employed in various applications, such as dampers, clutches, and active bearings, all of which are already on the market [ 5 , 6 ]. Seals Surface roughness Wear Asperities 18 06 2016 27 06 2017 Contributed by the Tribology Division of ASME for publication in the J...

... textures were observed. Good adhesion of epoxy matrix and carbon nanotube may be one of the reasons for decreasing in wear rate. Furthermore, these plateaus formed on 0.1 wt. % multiwalled carbon nanotube-filled composite worn surface prevent direct contact of the counterpart asperities, which ultimately...

... fatigue, whereas abrasive part is an anticipatory outcome of plastic contacts by hard metal asperities on to soft polymer surface. Further, presuming adhesive interactions in elastic–plastic contacts, asperity contact theories with necessary modifications were analyzed to assess load and separation...

... of the pressure at asperity-scale (equivalently, of the correct coefficient of the area–load linear relationship), but that the quantitative aspects still are way beyond our understanding. In particular, the choice of the sharp cutoff remains arbitrary, and pushing it farther from what Lorenz et al. [ 6 ] suggest...

... received May 6, 2017; published online July 21, 2017. Assoc. Editor: Dae-Eun Kim. 21 01 2017 06 05 2017 Abrasion Adhesion Dry friction Friction Hardness Surface roughness Wear Wear mechanisms Asperities Oscillating motion at low amplitudes can cause considerable amount...

... . Manuscript received December 26, 2016; final manuscript received April 27, 2017; published online July 21, 2017. Assoc. Editor: James R. Barber. 26 12 2016 27 04 2017 Adhesion Contact area Surface roughness Asperities Adhesion between elastic rough bodies is still not well...