Multiscale simulation of dry friction in wheel/rail contact

Bucher, F.; Дмитриев, А. И.; Ertz, Martin; Knothe, Klaus; Popov, Valentin L.; Psakhie, S. G.; Shilko, Evgeny V.

doi:10.1016/j.wear.2006.01.046

Cited by 51 publications

(14 citation statements)

References 18 publications

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“…[29,30] However, in vehicle dynamics investigations, COF is normally taken as an input, either constant or velocity dependent. The dependence of the coefficient of friction on the sliding velocity is typically a decreasing curve which may be well described by an exponential function with three parameters.…”

Section: The Problem -Variable Friction Conditionsmentioning

confidence: 99%

Transient wheel–rail adhesion characteristics under the cleaning effect of sliding

Voltr

Lata

2014

Vehicle System Dynamics

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Section: The Problem -Variable Friction Conditionsmentioning

confidence: 99%

Transient wheel–rail adhesion characteristics under the cleaning effect of sliding

Voltr

Lata

2014

Vehicle System Dynamics

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“…Other works couple smaller scales (the scale of the bodies in contact and the interface) to account for the effect of local damage on the behavior of bodies in contact [132,133].…”

Section: Towards Multi-scale Modelsmentioning

confidence: 99%

Numerical tribology of a dry contact

Renouf

Massi

Fillot

et al. 2011

Tribology International

104

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Tribologists are confronted on a daily basis by the need to understand the causes and consequences of friction on the behaviour of bodies in contact. Understanding contact behaviour is not only a scientific curiosity but the key to solving numerous industrial issues. Numerical tools have been developed to overcome the problems encountered in experiments due to limitations in the local dynamic analysis of multi-scale systems (mechanisms, bodies in contact, interfaces). More than an exhibition of numerical results, the present paper proposes reviewing the literature on the numerical tribology of dry contacts by analysing the different scales involved. © 2011 Elsevier Ltd. All rights reserved

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“…For instance, in biomechanical applications where knee and hip implant surface degradation is of concern, the analysis may include both wear debris within the joint [10] and cement particle contaminants from the implant-bone interface [11]. Similarly, wheel-rail traction investigations involve both a wear process that generates intrinsic TBs [12] and a layer of contaminant material on the rail [1]. Extrinsic TBs are almost always undesirable.…”

Section: Contact Interfaces With Third Bodiesmentioning

confidence: 99%

Inelastic analysis of granular interfaces via computational contact homogenization

Temizer

Wriggers

2010

Numerical Meth Engineering

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SUMMARYThe macroscale response of granular contact interfaces is investigated. In order to circumvent the difficulties associated with a direct resolution of such heterogeneous contact problems, where highly mobile particles residing between a deformable body and a rigid surface govern the microscale dynamics, a space-time contact homogenization methodology is developed. The overall approach is based on a separation of spatial as well as temporal scales and proposes an idealized purely frictional macroscale response. The induced macroscale dissipation is directly associated with the microscale dissipation mechanisms due to (i) an inelastic constitutive response for the boundary layer of the deformable body and (ii) frictional interaction among the components of the three-body contact system. The consequences of a viscoelastic boundary layer that sustains damage due to highly localized deformation in the vicinity of the particles are investigated extensively within a fully nonlinear computational setting that accounts for incompressibility. The effective coefficient of friction that is induced by the homogenization methodology as the fundamental macroscale observable is found to be of a non-Amontons as well as a non-Coulomb type. The proposed analysis framework is amenable to a multiscale implementation within a coupled micro-macro approach and yields insight into the macroscopic dynamics of similar heterogeneous interfaces with varying degrees of mobility associated with the roughness features.

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Multiscale simulation of dry friction in wheel/rail contact

Cited by 51 publications

References 18 publications

Transient wheel–rail adhesion characteristics under the cleaning effect of sliding

Transient wheel–rail adhesion characteristics under the cleaning effect of sliding

Numerical tribology of a dry contact

Inelastic analysis of granular interfaces via computational contact homogenization

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