Results 21 to 30 of about 2,247,567 (328)
Shearing the vacuum - quantum friction [PDF]
Journal of Physics: Condensed Matter, 1997 We consider two perfectly smooth featureless surfaces at T=0, defined only by their respective dielectric functions, separated by a finite distance, and ask the question whether they can experience any friction when sheared parallel to their interface. We find large frictional effects comparable to everyday frictional forces provided that the materials
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Shear friction capacity of self-consolidating concrete
Revista IBRACON de Estruturas e Materiais, 2020 An experimental research was developed to evaluate shear transfer in self-consolidating. Three concrete mixes were prepared, one conventional and two self-consolidating, differing on the proportion of the coarse and fine aggregate used.
Gustavo Savaris +1 more
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Yantu gongcheng xuebao, 2022 Suction caissons are popular for mooring oil and gas platforms and fixing wind turbines. The penetration resistance is mainly the friction between the inner and outer walls during suction penetration in sand.
LI Da-yong 1, 2, HOU Xin-yu 1, ZHANG Yu-kun 1, GAO Yu-feng 3
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Effects of a straight oil on friction at the tool-workmaterial interface in machining [PDF]
, 2010 Authors would like to express their gratitude to the TOTAL Company for the furniture of the lubricant.The quantification of friction coefficient along the tool-workmaterial interface in machining remains an issue in tribology. This paper aims identifying
RECH, Joël +7 more
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Effects of Groove Feature on Shear Behavior of Steel-Sand Interface
Advances in Civil Engineering, 2020 Surface groove morphology of structure and particle distribution of soil had a significant effect on the surface friction of structure. In order to investigate the interface shear stress-shear displacement curves, interface model and interface shear ...
Jukun Guo +5 more
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Measuring Interparticle Friction of Granules for Micromechanical Modeling
Energies, 2022 The aim of this paper is to develop an experimental procedure to measure contact friction between granular particles. The contact friction is a micro-property needed in the micromechanical modeling of a granular medium.
Yuan Li, Dave Chan, Alireza Nouri
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Shearing of frictional sphere packings [PDF]
EPL (Europhysics Letters), 2011 We measure shear response in packings of glass beads by pulling a thin, rough, metal plate vertically through a bed of volume fraction phi, which is set, before the plate is pulled, in the range 0.575 to 0.628. The yield stress is velocity independent over 4 decades and increases exponentially with phi, with a transition at phi approximately 0.595.
Métayer, J.-F. +4 more
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Solids Under Extreme Shear: Friction‐Mediated Subsurface Structural Transformations
Advances in Materials, 2019 Tribological contacts consume a significant amount of the world's primary energy due to friction and wear in different products from nanoelectromechanical systems to bearings, gears, and engines.
C. Greiner, J. Gagel, P. Gumbsch
semanticscholar +1 more source
Friction and Shear Properties of Pine Biomass and Pellets [PDF]
Materials, 2020 Knowledge on the mechanical properties of granular biomass is important for the design and efficient operation of equipment used for handling, storage, and processing. Their mechanical properties are used as a measure of material quality. In this study, the mechanical properties of granular biomass obtained from pines (sawdust, shavings, long shavings,
Mateusz Stasiak +10 more
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Friction stir welding of commercially available superplastic aluminium [PDF]
, 2010 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A series of Friction Stir Welds (FSW) has been produced in order to optimise tool designs and weld/process variables to minimise flaws in the weld and ...
Minton, Timothy J
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