Results 31 to 40 of about 667,141 (301)

Research on the Time-Varying Properties of Brake Friction (September 2018)

open access: yesIEEE Access, 2018
In this paper, a dynamic model of the coefficient of friction (COF) is established from energy perspective and the principal friction mechanism of disc brake is investigated.
Zhishuai Wan   +3 more
doaj   +1 more source

Active Microrheology of Driven Granular Particles

open access: yes, 2013
When pulling a particle in a driven granular fluid with constant force $F_{ex}$, the probe particle approaches a steady-state average velocity $v$. This velocity and the corresponding friction coefficient of the probe $\zeta=F_{ex}/v$ are obtained within
Grob, Matthias   +3 more
core   +1 more source

Friction Prediction and Validation of a Variable Stiffness Lower Limb Exosuit Based on Finite Element Analysis

open access: yesActuators, 2021
The variable stiffness exosuit has great potential for human augmentation and medical applications. However, the model of the variable stiffness mechanism in exosuits is far from satisfactory for the accurate prediction and control of friction force ...
Zhuo Ma   +3 more
doaj   +1 more source

Markov state modeling of sliding friction [PDF]

open access: yesPhysical Review E, 2016
9 pages, 11 ...
Pellegrini, Franco   +4 more
openaire   +4 more sources

Dynamic friction modelling without drift and its application in the simulation of a valve controlled hydraulic cylinder system

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The frictional modelling literature is reviewed, and it is demonstrated that unrealistic drift results when the shape coefficient is 1.0 for the LuGre and the integral friction models.
Junhong YANG, Andrew PLUMMER, Yong XUE
doaj   +1 more source

Optimal control design for robust fuzzy friction compensation in a robot joint [PDF]

open access: yes, 2009
This paper presents a methodology for the compensation of nonlinear friction in a robot joint structure based on a fuzzy local modeling technique. To enhance the tracking performance of the robot joint, a dynamic model is derived from the local physical ...
Denai, M.   +3 more
core   +2 more sources

Some Hamiltonian models of friction II [PDF]

open access: yesJournal of Mathematical Physics, 2012
In the present paper we consider the motion of a very heavy tracer particle in a medium of a very dense, non-interacting Bose gas. We prove that, in a certain mean-field limit, the tracer particle will be decelerated and come to rest somewhere in the medium.
Egli, Daniel, Gang, Zhou
openaire   +2 more sources

Effect of Friction Model Type on Tool Wear Prediction in Machining

open access: yesMachines
One of the key measures of cutting tool efficiency in machining processes is tool wear. In recent decades, numerical modeling of this phenomenon—primarily through finite element cutting models—has gained increasing importance.
Michael Storchak   +5 more
doaj   +1 more source

On an Elastoplastic Sliding Model for a Coated Single Asperity

open access: yesLubricants, 2018
In this study, a sliding friction model for coated single asperity contacts is proposed. A displacement-driven layered contact algorithm is firstly introduced and verified by the finite element method.
Can Wang, Dik J. Schipper
doaj   +1 more source

Stick–Slip Characteristic Analysis of High-Speed Train Brake Systems: A Disc–Block Friction System with Different Friction Radii

open access: yesVehicles, 2023
Inspired by the difference in the friction radii of the pads from the high-speed train brake system, stick–slip experiments for a disc–block friction system with different friction radii were carried out via a test device.
Changlin Lu   +5 more
doaj   +1 more source

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