A Study of Elastic-plastic Contact of Rough Surfaces Using N-point Asperity Model

Waghmare, Ajay K.; Sahoo, Prasanta

doi:10.1016/j.mspro.2014.07.361

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…The slipping of the asperities because of tangential load may occur either in purely elastic or elasticplastic stage-I zone of deformation. Therefore, resistance offered by such asperities before slip is calculated as frictional force using equation (19) while the resistance offered by asperities which do not slip is calculated by equation (22). …”

Section: Frictional Load Formulation For Single N-point Asperitymentioning

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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Section: Frictional Load Formulation For Single N-point Asperitymentioning

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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“…. But author's earlier study (Waghmare & Sahoo, 2014a) shows that the demarcation of different zones of deformation on the basis of plasticity index ( )…”

Section: > ψmentioning

confidence: 99%

“…So use of this model is expected to yield comparatively more accurate results of analysis. Based on this new n-point asperity model, the rough surface contact problems for various contact conditions have been considered earlier (Hariri et al, 2006b;Sahoo et al, 2009;Waghmare & Sahoo, 2014a;2014b;2015a;in press). Novelty of the present work is -it incorporates wear contribution from all zones of asperity contact deformation; and it analyses the contact situation for wear in more realistic way of modeling, i.e.…”

Section: Introductionmentioning

confidence: 99%

Adhesive Wear Based on Accurate FEA Study of Asperity Contact and n-Point Asperity Model

Waghmare

Sahoo

2016

International Journal of Surface Engineering and Interdisciplinary Materials Science

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The paper describes a theoretical study of adhesive wear based on accurate finite element analysis (FEA) of elastic-plastic contact of single asperity and n-point asperity model. The wear model developed considers wear particle generation in whole range of deformation, ranging from fully elastic through elastic-plastic to fully plastic. Well defined adhesion index and plasticity index are used to study the prospective situations arising out of variation in load, material properties, and surface roughness. It is observed that the wear volume at particular level of separation increases with increase in plastic deformation and adhesion effect. Materials having higher tendency to adhesion show higher wear rate. Trend of the results obtained is found in line with the existing solutions which are modeled with conventional asperity concept. Inclusion of separate formulations for intermediate state of deformation of asperities which are based on accurate FEA study gives complete solution.

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Unloading contact mechanics analysis of elastic–plastic fractal surface

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A Study of Elastic-plastic Contact of Rough Surfaces Using N-point Asperity Model

Cited by 4 publications

References 12 publications

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

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

Adhesive Wear Based on Accurate FEA Study of Asperity Contact and n-Point Asperity Model

Unloading contact mechanics analysis of elastic–plastic fractal surface

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