Results 71 to 80 of about 24,285 (271)

Velocity dependence of joint friction in robotic manipulators with gear transmissions [PDF]

open access: yes, 2005
This paper analyses the problem of modelling joint friction in robotic manipulators with gear transmissions at joint velocities varying from close to zero until their maximum appearing values.
Aarts, Ronald, Jonker, Ben, Waiboer, Rob
core   +2 more sources

Stochastic multiscale analysis in hydrodynamic lubrication [PDF]

open access: yesInternational Journal for Numerical Methods in Engineering, 2017
SummaryA stochastic multiscale analysis framework is developed for hydrodynamic lubrication problems with random surface roughness. The approach is based on a multi‐resolution computational strategy wherein the deterministic solution of the multiscale problem for each random surface realization is achieved through a coarse‐scale analysis with a local ...
A. Waseem, J. Guilleminot, İ. Temizer
openaire   +5 more sources

Injectable Chondroitin Sulfate Methacrylate Hydrogel Microspheres Co‐Loaded with GLPM Nanozyme, Dexamethasone, and Stem Cells for Synergistic Osteoarthritis Therapy

open access: yesAdvanced Science, EarlyView.
A multifunctional injectable microsphere system is fabricated via UV‐assisted microfluidic cross‐linking, integrating nanozyme‐based ROS scavenging, sustained dexamethasone release, and stem cell delivery. Upon IA injection, the microspheres adapt to joint stress, suppress inflammation, and promote cartilage regeneration, offering a minimally invasive ...
Xiaochen Feng   +10 more
wiley   +1 more source

Numerical Simulation of the Lubrication Performance of the Stator and Rotor Friction Pair Surface Rhombus-like Texture in Screw Pumps

open access: yesLubricants
To address wear failure in screw pump stator and rotor friction pairs, this study constructed a numerical model of a rhombus-like micro-dimple texture on friction pair surfaces based on the scale structure of rhombus rattlesnakes.
Xiangzhi Shi   +6 more
doaj   +1 more source

Estimation of random bio-hydrodynamic lubrication parameters for joints with phospholipid bilayers [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 1921
This paper presents a new form of a mathematical estimation of stochastic bio-hydrodynamic lubrication parameters for real human joint surfaces with phospholipid bilayers.
Krzysztof Wierzcholski, Andrzej Miszczak
doaj   +1 more source

Membrane‐Mediated Force Transduction Drives Stick‐Slip Motion of Lipid Vesicles

open access: yesAdvanced Science, EarlyView.
A rotating magnetic field actuates a ferromagnetic particle inside a lipid vesicle, generating internal flows that induce stick‐slip propulsion near a surface. Membrane properties—elasticity, excess area, and phase behavior—modulate this motion by shaping stress dissipation and force transduction.
Paula Magrinya   +3 more
wiley   +1 more source

Particle motion between parallel walls: Hydrodynamics and simulation [PDF]

open access: yes, 2010
The low-Reynolds-number motion of a single spherical particle between parallel walls is determined from the exact reflection of the velocity field generated by multipoles of the force density on the particle’s surface.
Brady, John F., Swan, James W.
core  

Transverse electrokinetic and microfluidic effects in micro-patterned channels: lubrication analysis for slab geometries

open access: yes, 2001
Off-diagonal (transverse) effects in micro-patterned geometries are predicted and analyzed within the general frame of linear response theory, relating applied presure gradient and electric field to flow and electric current.
A. Ajdari   +13 more
core   +1 more source

Accelerated Stokesian Dynamics simulations [PDF]

open access: yes, 2001
A new implementation of the conventional Stokesian Dynamics (SD) algorithm, called accelerated Stokesian Dynamics (ASD), is presented. The equations governing the motion of N particles suspended in a viscous fluid at low particle Reynolds number are ...
Brady, John F., Sierou, Asimina
core   +1 more source

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