Friction—The Present State of Our Understanding

Tabor, D.

doi:10.1115/1.3251622

Cited by 310 publications

(118 citation statements)

References 28 publications

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“…It is a static model that has neither history nor states [7] and may be explained based on the quasi-static properties of materials. The Coulomb model has no dissipative component to it, which is a drawback [76]. It is given by Ref.…”

Section: Static Friction Modelsmentioning

confidence: 99%

A review of friction models in interacting joints for durability design

2017

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This paper presents a comprehensive review of friction modelling to provide an understanding of design for durability within interacting systems. Friction is a complex phenomenon and occurs at the interface of two components in relative motion. Over the last several decades, the effects of friction and its modelling techniques have been of significant interests in terms of industrial applications. There is however a need to develop a unified mathematical model for friction to inform design for durability within the context of varying operational conditions. Classical dynamic mechanisms model for the design of control systems has not incorporated friction phenomena due to non-linearity behaviour. Therefore, the tribological performance concurrently with the joint dynamics of a manipulator joint applied in hazardous environments needs to be fully analysed. Previously the dynamics and impact models used in mechanical joints with clearance have also been examined. The inclusion of reliability and durability during the design phase is very important for manipulators which are deployed in harsh environmental and operational conditions. The revolute joint is susceptible to failures such as in heavy manipulators these revolute joints can be represented by lubricated conformal sliding surfaces. The presence of pollutants such as debris and corrosive constituents has the potential to alter the contacting surfaces, would in turn affect the performance of revolute joints, and puts both reliability and durability of the systems at greater risks of failure. Key literature is identified and a review on the latest developments of the science of friction modelling is presented here. This review is based on a large volume of knowledge. Gaps in the relevant field have been identified to capitalise on for future developments. Therefore, this review will bring significant benefits to researchers, academics and industry professionals.

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Section: Static Friction Modelsmentioning

confidence: 99%

A review of friction models in interacting joints for durability design

2017

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“…The roughness is added to the curvature of the contacting surfaces (i.e., the discrete points are randomized in the radial direction). The randomization should be in accordance with [20,28], which have found that the average change of slope between two consecutive points is, on average, 10-15 • . In this research the maximum change of slope was limited to 15 • .…”

Section: Mathematical Modelmentioning

confidence: 99%

Simulating Multibody Dynamics With Rough Contact Surfaces and Run-in Wear

Slavič

Boltežar

2006

Nonlinear Dyn

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Abstract. The overall dynamics of a multibody system is actually a multi-scale problem because it depends a great deal on the local contact properties (coefficient of restitution, friction, roughness, etc). In this paper we found that the briefly presented force-based theory of plane dynamics for a multibody system with unilateral contacts was appropriate for simulating detailed multi-contact situations of rough contacting surfaces.The focus of the paper is on a geometrically detailed description of rough surfaces. To achieve the run-in effect of the contacting surfaces under dynamical loads the contacting surfaces need to be re-shaped. For the re-shaping a wear model based on the local loss of mechanical energy under dynamical loads is presented.The new ideas are presented for a numerical analysis of measuring the coefficient of friction at the rim of a wheel (rotating body). With the help of the analysis the experimentally observed change in the measured coefficient of friction of up to 30% for only slightly altered experimental conditions is explained.

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“…Later on in their classical theory of adhesive friction, Bowden and Tabor [2], described the adhesive friction as a tangential force required to shear off the adhesive bonds formed at the tip of contacting asperities due to local plastic deformation. Tabor [3] in his review paper presented a general critical picture of the understanding of frictional process. He emphasized that three basic elements are involved in the dry friction of solids viz.…”

Section: Introductionmentioning

confidence: 99%

Adhesive Friction Based on Accurate Elastic-Plastic Finite Element Analysis and n-Point Asperity Concept

Waghmare

Sahoo

2017

IFSL

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Abstract. The present work considers analysis of adhesive friction of rough surfaces using n-point asperity concept for statistical definition of surface roughness features, and accurate finite element analysis of elastic-plastic deformation of single asperity contact. The paper describes theoretical study in which whole range of deformation of an n-point asperity viz. from fully elastic, through elastic-plastic, to fully plastic is considered and the intermediate transition regime is treated analytically as well as numerically. Well defined adhesion index and plasticity index are used to study the prospective contact situations arising out of variation in material properties and surface roughness features. Using practical values of material properties and surface roughness parameters, results are obtained for normally applied load, friction force, and coefficient of friction. It is observed that the surfaces undergoing predominantly plastic type of deformation and having moderate to higher adhesion have constant coefficient of friction.

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Friction—The Present State of Our Understanding

Cited by 310 publications

References 28 publications

A review of friction models in interacting joints for durability design

A review of friction models in interacting joints for durability design

Simulating Multibody Dynamics With Rough Contact Surfaces and Run-in Wear

Adhesive Friction Based on Accurate Elastic-Plastic Finite Element Analysis and n-Point Asperity Concept

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