Sample calculations of flash temperatures at a silver-graphite electric contact sliding on copper

Explicit equations are presented for calculating the flash temperatures at plastically deformed circular contact spots due to friction and/or Joule heat. Numerical examples calculated for a metal-graphite composite in a very wide range of speeds and loads suggest that intuitive estimates of the flas...

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Bibliographic Details
Published inWear Vol. 107; no. 1; pp. 71 - 90
Main Author KUHLMANN WILSDORF, D
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 1986
Amsterdam Elsevier Science
New York, NY
Subjects
Applications
Applied sciences
Cross-disciplinary physics: materials science; rheology
Electrical engineering. Electrical power engineering
Electrical machines
Engineering techniques in metallurgy. Applications. Other aspects
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Others aspects
Physics
Specific materials
Speed
Sliding wear
Theory
Surface temperature
Electric contact
Mathematical model
Electric current
Static load
Temperature
Spark discharge
Electric machine
Brush commutator contact
Sliding contact
Commutator machine
Copper
Discharge breakdown
Electric discharge
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Summary:Explicit equations are presented for calculating the flash temperatures at plastically deformed circular contact spots due to friction and/or Joule heat. Numerical examples calculated for a metal-graphite composite in a very wide range of speeds and loads suggest that intuitive estimates of the flash temperatures tend to be too high. On the basis of the figures it should be possible to deduce approximate values for the flash temperature for a great variety of sliding couples and sliding conditions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0043-1648
1873-2577
DOI:10.1016/0043-1648(86)90047-5