Results 81 to 90 of about 14,864 (294)

Analysis of a dry friction problem under small displacements: application to a bolted joint [PDF]

open access: yes, 2003
This study presents an analysis of the problem of macroscopic contact of steel upon steel with dry friction, in the specific case of a bolted joint. The configurations of these types of joints result in very small displacements and interface sliding ...
Barrau, Jean-Jacques   +8 more
core   +1 more source

Progress in Theoretical Modelling of Macroscopic and Microscopic Dynamics of Bolted Joints in Complex Equipment

open access: yesLubricants
Bolt connection structure is a common form of connecting large and complex equipment. Its object contact surfaces under normal and tangential loads will appear in the form of slip and adhesion, which affects the service life of mechanical equipment ...
Xiaohan Lu   +5 more
doaj   +1 more source

Rational Tuning of Hygroscopic Oscillation of Stacked Nanoflake Assemblies for Continuous Ambient Energy Harvesting

open access: yesAdvanced Materials, EarlyView.
Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang   +5 more
wiley   +1 more source

Investigation into the friction and roughness properties of prints using conventional and uv inks / UV ir įprastais dažais spausdintų atspaudų šiurkštumo ir trinties savybių tyrimas

open access: yesMokslas: Lietuvos Ateitis, 2015
The article experimentally investigates the properties of offset print friction and determines static and kinetic coeffi­cients of friction. Conventional and UV inks have been found to increase the static friction coefficient and re­duce the kinetic ...
Giedrė Giraitytė, Jonas Sidaravičius
doaj   +1 more source

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

open access: yesAdvanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim   +5 more
wiley   +1 more source

Measurement of Kinetic Friction Coefficient through Magnetic Induction Using Audacity Application in Physics Learning

open access: yes, 2020
This study is designed to produce an experimental device for the measurement of the kinetic friction coefficient of material through magnetic induction using Audacity application. The objects of material the kinetic friction coefficient of which is going
Fauzan, Ahmad   +2 more
core   +1 more source

Da Vinci’s friction for granular media

open access: yesScientific Reports
The concept of friction was integrated into the broader field of tribology in the 20th century. Here, we revive the older friction coefficient concept and show that it is the defining parameter for a family of granular materials.
Assaf Miron   +3 more
doaj   +1 more source

Kinetics of Capillary Condensation in Nanoscopic Sliding Friction [PDF]

open access: yesPhysical Review Letters, 2002
The velocity and humidity dependence of nanoscopic sliding friction has been studied on CrN and diamondlike carbon surfaces with an atomic force microscope. The surface wettability is found to be decisive. Partially hydrophilic surfaces show a logarithmic decrease of friction with increasing velocity, the slope of which varies drastically with humidity,
Riedo E, Lévy F, Brune H
openaire   +3 more sources

Engineering Layered Magnetic Hydrogels for Cell Placement via Shear and Magnetic Field‐Induced Assembly

open access: yesAdvanced Materials, EarlyView.
Magnetic particles are organized into layered architectures by combining shear flow and magnetic fields, with the resulting structures governed by appropriate Mason numbers. The programmed assemblies provide spatial guidance for cell placement, linking field‐controlled self‐assembly, flow‐induced structuring and biological organization.
Guillermo Camacho   +5 more
wiley   +1 more source

How does kinetic friction depend on the contact surface area of a solid? [PDF]

open access: yes, 2013
This essay studies the friction phenomenon to answer the question: “how does kinetic friction depend on the contact surface area of a solid?” The object of research, kinetic friction, has been modified from the sole term “friction” to narrow down the ...
Kaplan, Sevde Sena
core  

Home - About - Disclaimer - Privacy