Journal ArticleDOI
Elastic-Plastic Contact Analysis of a Sphere and a Rigid Flat
Lior Kogut,Izhak Etsion +1 more
TLDR
An elastic-plastic finite element model for the frictionless contact of a deformable sphere pressed by a rigid flat is presented in this paper, which provides dimensionless expressions for the contact load, contact area and mean contact pressure, covering a large range of interference values from yielding inception to fully plastic regime of the spherical contact zone.Abstract:
An elastic-plastic finite element model for the frictionless contact of a deformable sphere pressed by a rigid flat is presented. The evolution of the elastic-plastic contact with increasing interference is analyzed revealing three distinct stages that range from fully elastic through elastic-plastic to fully plastic contact interface. The model provides dimensionless expressions for the contact load, contact area, and mean contact pressure, covering a large range of interference values from yielding inception to fully plastic regime of the spherical contact zone. Comparison with previous elastic-plastic models that were based on some arbitrary assumptions is made showing large differences. ©2002 ASMEread more
Citations
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Book ChapterDOI
Introduction to the Finite Element Method
Nathan Ida,João P. A. Bastos +1 more
TL;DR: This chapter introduces the finite element method (FEM) as a tool for solution of classical electromagnetic problems and discusses the main points in the application to electromagnetic design, including formulation and implementation.
Journal ArticleDOI
A Finite Element Study of Elasto-Plastic Hemispherical Contact Against a Rigid Flat
Robert L. Jackson,Itzhak Green +1 more
TL;DR: In this paper, a finite element study of elasto-plastic hemispherical contact is presented, and the results are normalized such that they are valid for macro contacts (e.g., rolling element bearings), although micro-scale surface characteristics such as grain boundaries are not considered.
Journal ArticleDOI
The relationship between attractive interparticle forces and bulk behaviour in dry and uncharged fine powders
TL;DR: The physics of granular materials in ambient gases is governed by interparticle forces, gas-particle interaction, geometry of particle positions and geometry of particles contacts as mentioned in this paper, which are strongly dependent on the external forces, boundary conditions and on the assembling procedure.
Journal ArticleDOI
A Finite Element Based Elastic-Plastic Model for the Contact of Rough Surfaces ©
Lior Kogut,Izhak Etsion +1 more
TL;DR: An elastic-plastic model for contacting rough surfaces that is based on accurate Finite Element Analysis (FEA) of an elasticplastic single asperity contact is presented in this paper.
Journal ArticleDOI
A Static Friction Model for Elastic-Plastic Contacting Rough Surfaces
Lior Kogut,Izhak Etsion +1 more
TL;DR: In this article, a model that predicts the static friction for elastic-plastic contact of rough surfaces is presented, where the model incorporates the results of accurate finite element analyses for the elastic plastic contact, adhesion and sliding inception of a single asperity in a statistical representation of surface roughness.
References
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Journal ArticleDOI
Contact of Nominally Flat Surfaces
TL;DR: In this article, the authors proposed a new theory of elastic contact, which is more closely related to real surfaces than earlier theories, and showed how the contact deformation depends on the topography of the surface, and established the criterion for distinguishing surfaces which touch elastically from those which touch plastically.
Journal ArticleDOI
Theory of Elasticity (3rd ed.)
Book
The Hardness of Metals
TL;DR: Hardness measurements with conical and pyramidal indenters as mentioned in this paper have been used to measure the area of contact between solids and the hardness of ideal plastic metals. But they have not yet been applied to the case of spherical indenters.
Book
An Introduction to the Finite Element Method
TL;DR: Second-order Differential Equations in One Dimension: Finite Element Models (FEM) as discussed by the authors is a generalization of the second-order differential equation in two dimensions.
Book ChapterDOI
Introduction to the Finite Element Method
Nathan Ida,João P. A. Bastos +1 more
TL;DR: This chapter introduces the finite element method (FEM) as a tool for solution of classical electromagnetic problems and discusses the main points in the application to electromagnetic design, including formulation and implementation.