Results 71 to 80 of about 1,622,252 (341)
Stochastic motion under nonlinear friction representing shear thinning
Physical Review E, 2023 We study stochastic motion under a nonlinear frictional force that levels off with increasing velocity. Specifically, our frictional force is of the so-called Coulomb-tanh type. At small speed, it increases approximately linearly with velocity, while at large speed it approaches a constant magnitude, similarly to solid (dry, Coulomb) friction.
Theo Lequy, Andreas M. Menzel
openaire +3 more sources
Shear thinning in non-Brownian suspensions explained by variable friction between particles
Journal of Fluid Mechanics, 2018 We propose to explain shear-thinning behaviour observed in most concentrated non-Brownian suspensions by variable friction between particles. Considering the low magnitude of the forces experienced by the particles of suspensions under shear flow, it is ...
L. Lobry +4 more
semanticscholar +1 more source
Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena +2 more
wiley +1 more source
Shear Characteristics of Soil—Concrete Structure Interaction Interfaces
Applied Sciences, 2022 The shear characteristics of the interfaces between soil and concrete structures are essential for the safety of the structures. In this study, a large-scale direct shear test apparatus was developed to measure the mechanical parameters of soil–concrete ...
Dejie Li +3 more
doaj +1 more source
Velocity dependence of friction of confined polymers [PDF]
, 2009 We present molecular dynamics friction calculations for confined hydrocarbon solids with molecular lengths from 20 to 1400 carbon atoms. Two cases are considered: (a) polymer sliding against a hard substrate, and (b) polymer sliding on polymer.
Persson, B. N. J. +2 more
core +1 more source
Friction’s Role in Shear Thickening
Physics, 2013 A new model is able to simulate the sudden jump in viscosity that can occur in rapidly flowing suspensions of hard particles in liquids.
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan +5 more
wiley +1 more source
Finite Element Analysis Using the Crack Strain Separation Model for Reinforced Concrete Membrane
Buildings, 2023 This paper presents a finite element analysis of the bi-directional orthogonal model, which incorporates individual crack strain separation and tracking.
Jeffrey P. Mitchell +3 more
doaj +1 more source
Noncontact friction via capillary shear interaction at nanoscale [PDF]
Nature Communications, 2015 AbstractFriction in an ambient condition involves highly nonlinear interactions of capillary force, induced by the capillary-condensed water nanobridges between contact or noncontact asperities of two sliding surfaces. Since the real contact area of sliding solids is much smaller than the apparent contact area, the nanobridges formed on the distant ...
Manhee Lee +3 more
openaire +3 more sources
Start-up shear of spherocylinder packings: Effect of friction [PDF]
Physical Review E, 2021 We study the response to shear deformations of packings of long spherocylindrical particles that interact via frictional forces with friction coefficient $ $. The packings are produced and deformed with the help of molecular dynamics simulations combined with minimization techniques performed on a GPU. We calculate the linear shear modulus $g_\infty$,
openaire +4 more sources