Results 21 to 30 of about 14,096,944 (291)

Aftershocks in a frictional earthquake model [PDF]

open access: yesPhysical Review E, 2014
Inspired by spring-block models, we elaborate a "minimal" physical model of earthquakes which reproduces two main empirical seismological laws, the Gutenberg-Richter law and the Omori aftershock law. Our new point is to demonstrate that the simultaneous incorporation of ageing of contacts in the sliding interface and of elasticity of the sliding plates
O. M. Braun, Erio Tosatti
openaire   +5 more sources

A Position-Based Friction Error Model and Its Application to Parameter Identification

open access: yesIEEE Access, 2019
Most existing methods rely on the torque information of a servo drive to predict the tracking error caused by the friction force (friction error), but the torque information is not available in certain systems.
Dailin Zhang   +3 more
doaj   +1 more source

Friction in a Model of Hamiltonian Dynamics [PDF]

open access: yesCommunications in Mathematical Physics, 2012
53 ...
Fröhlich, Jürg   +2 more
openaire   +3 more sources

Meso–Macro Coupled Analysis of Pressure-Dependent Friction of Rubber

open access: yesFrontiers in Mechanical Engineering, 2020
To deepen the understanding of the frictional sliding phenomena of rough surfaces, advances are required in numerical analysis methods at various spatial scales. In this study, to examine the microscopic behavior of a rough asperity contact corresponding
Shingo Ozaki   +3 more
doaj   +1 more source

Modeling and robust control algorithms for a linear belt driven system

open access: yesOpen Computer Science, 2018
This paper proposes the mathematical modeling and robust control algorithms for linear belt system with the help of sliding mode control approach. Due to the elasticity of the belt, the presence of frictions, and the un-modeled dynamics, conventional ...
Minh Vu Trieu, Tamre Mart, Sekhri Even
doaj   +1 more source

Multi-physics simulation of friction stir welding process [PDF]

open access: yes, 2010
The Friction Stir Welding (FSW) process comprises of several highly coupled (and non-linear) physical phenomena: large plastic deformation, material flow transportation, mechanical stirring of the tool, tool-workpiece surface interaction, dynamic ...
Li, Hongjun   +2 more
core   +2 more sources

In-cylinder fuel and lubricant effects on gasoline engine friction [PDF]

open access: yes, 2007
The purpose of the research reported in this thesis was to investigate the viability and quantify the potential gains of improving fuel economy of the gasoline engine through strategic application of additives.
Smith, Oiver Mark Edward
core   +6 more sources

Effect of temperature and strain rate on friction factor during hot deformation of al-mg and al-cu-mg al-alloys [PDF]

open access: yesComputer Methods in Materials Science, 2009
The paper is linked to the investigation of the effect of temperature as well as strain rate on friction properties of lubricants for hot-die forging. Friction factor was chosen as one of the criteria for the estimation of the mentioned effects.
Pavel Petrov   +5 more
doaj   +1 more source

Some Hamiltonian models of friction [PDF]

open access: yesJournal of Mathematical Physics, 2011
Mathematical results on a model describing the motion of a tracer particle through a non-interacting Bose-Einstein condensate are described. In the limit of a very dense gas and for a very large particle mass, the dynamics of the coupled system is determined by classical nonlinear Hamiltonian equations of motion.
Fröhlich, Jürg   +2 more
openaire   +3 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

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