NDLI: Calculations of Mechanical Stresses in Electrical Contact Situations

Content Provider	IEEE Xplore Digital Library
Author	Tangena, A. Hurkx, G.
Copyright Year	1978
Abstract	Mechanical stresses occurring in electrical contact situations were calculated with the aid of the finite element method (FEM). As a first step the stresses in a gold film on a nickel substrate, indented by a sphere, were calculated, assuming elastic deformations. With the same normal contact force the stresses in the film can differ enormously for different film thicknesses of the gold. In many electrical contact situations plastic deformations occur. As a second step these deformations were also calculated. Therefore it is necessary to know the plastic part of the stress-strain curve. A method is presented for obtaining this curve for thin metal films from a Brinell indentation test. An elasticplastic contact situation for a cylinder sliding over a gold surface with different friction coefficients is investigated. It is shown that phenomena like the onset of prow formation and cracking of the surface can be observed from the calculated results.
Sponsorship	IEEE Electronic Industries Alliance American Society of Mechanical Engineering (ASME) NBS SAE
Starting Page	13
Ending Page	20
Page Count	8
File Size	1139814
File Format	PDF
ISSN	01486411
Volume Number	8
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1985-03-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stress Contacts Gold Plastics Surface cracks Finite element methods Nickel Substrates Testing Friction
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Electronic, Optical and Magnetic Materials Engineering Electrical and Electronic Engineering

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