The influence of geometrical and rheological non-linearity on the calculation of rubber friction

Scaraggi, Michele; Comingio, Davide; Al‐Qudsi, Ahmad; Lorenzis, Laura De

doi:10.1016/j.triboint.2016.04.027

Cited by 12 publications

(3 citation statements)

References 56 publications

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“…The evolution of the true contact area, interface permeability, electric and thermal contact resistance can all be resolved in the framework of the BEM for linear material laws. Regarding material nonlinearities, elasto-plastic [152][153][154] and viscoelastic [155,156] material behavior can be incorporated in the BEM framework by assuming that deformations and slopes remain small, otherwise an FEM would be needed [157,158]. It should remarked that most contact systems involving elasto-plastic materials operate mainly in the elastic regimes both at the micro-and macroscales; hence, depending on the level of stress and the type of loading, considering plastic deformation may be important during the first loading cycles but may not be needed in subsequent ones.…”

Section: Finite and Boundary Element Methodsmentioning

confidence: 99%

Modeling and simulation in tribology across scales: An overview

Vakis

Yastrebov

Scheibert

et al. 2018

Tribology International

428

230

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This review summarizes recent advances in the area of tribology based on the outcome of a Lorentz Center workshop surveying various physical, chemical and mechanical phenomena across scales. Among the main themes discussed were those of rough surface representations, the breakdown of continuum theories at the nano-and micro-scales, as well as multiscale and multiphysics aspects for analytical and computational models relevant to applications spanning a variety of sectors, from automotive to biotribology and nanotechnology. Significant effort is still required to account for complementary nonlinear effects of plasticity, adhesion, friction, wear, lubrication and surface chemistry in tribological models. For each topic, we propose some research directions.

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Section: Finite and Boundary Element Methodsmentioning

confidence: 99%

Modeling and simulation in tribology across scales: An overview

Vakis

Yastrebov

Scheibert

et al. 2018

Tribology International

428

230

View full text Add to dashboard Cite

show abstract

“…ð Þcan be determined for a composite (i.e. stepwise-or continuously graded) bulk as well, 10,11 and in the simplest case of a viscoelastic layer (thickness t) bonded onto a rigid substrate, [10][11][12][13] we have (the subscript Ài is dropped for simplicity)…”

Section: Mean Field Theorymentioning

confidence: 99%

The effect of finite roughness size and bulk thickness on the prediction of rubber friction and contact mechanics

Scaraggi

Persson²

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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We present the numerical results for the viscoelastic and adhesive contribution to rubber friction for a tread rubber sliding on a hard solid with a randomly rough surface. In particular, the effect of the high-and low-frequency roughness power spectrum cut-off is investigated. The numerical results are then compared to the predictions of an analytical theory of rubber friction. We show that the friction coefficient for large load is given exactly by the theory while some difference between theory and simulations occur for small loads, due to a finite sample-size effects, whereas the contact area is almost unaffected by the low frequency cut-off. Finally, the role of a finite rubber thickness on viscoelastic friction and contact area is introduced and critically discussed. Interestingly, we show that classical rough contact mechanics scaling rules do not apply for this case.

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“…Modeling and simulation of journal bearing are not new, as journal bearing is a very popular mechanism used in rotary machines (Pang et al, 2014;Wang et al, 2014;Scaraggi et al, 2016). Chun and Ha (2001), and Chun (2002) investigated the influence of turbulence on journal bearing operation.…”

Section: Introductionmentioning

confidence: 99%

Investigations on influence of groove shapes for the journal bearing in high-speed and heavy-load press system

Chen

Sun

Cao

2018

ILT

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Purpose The purpose of this study is to investigate the hydrodynamic characteristics of journal bearings in a high-speed and heavy-load press system by considering thermal influence and cavitation. Design/methodology/approach A proper and effectual computational method is presented for steady-state analysis of fluid interaction in a rotor-bearing press system by combining computational fluid dynamics techniques. Findings The influences of eccentricity ratio, rotational speed and oil-film thickness on the hydrodynamic behavior of the journal bearing are studied. Originality/value The computational method can be used for creating a precise lubrication design for a journal bearing of a lubrication system.

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The influence of geometrical and rheological non-linearity on the calculation of rubber friction

Cited by 12 publications

References 56 publications

Modeling and simulation in tribology across scales: An overview

Modeling and simulation in tribology across scales: An overview

The effect of finite roughness size and bulk thickness on the prediction of rubber friction and contact mechanics

Investigations on influence of groove shapes for the journal bearing in high-speed and heavy-load press system

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