On the Evolution of Contact Patch Concept

The paper aims to highlight the evolution of the concept of physical contact between two technical bodies (machine parts). The most abstract situation occurs in antiquity when the necessary geometry concepts were created. Engineering applications from the industrial age have demanded higher performa...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 514; no. 1; pp. 12018 - 12023
Main Authors Dehelean, L M, Dehelean, N M
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2019
Subjects
Evolution
Railway engineering
Railway tracks
Topology
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Summary:The paper aims to highlight the evolution of the concept of physical contact between two technical bodies (machine parts). The most abstract situation occurs in antiquity when the necessary geometry concepts were created. Engineering applications from the industrial age have demanded higher performances. These have become possible through a continuous refinement of the theoretical models. The hertzian contact between two evolving parts, in general, and between the wheel and the rail, in particular, evolved and became extremely concrete and full of details that were once obscure. The contact patch between the wheel and the rail has today an asymmetric geometry correlated with the state of stress and the dynamics of the railway track. The use of digital methods for describing topologies can be a way to create a model closer to the dynamic state of wheel and rail contact. We also encounter the same contact phenomena in gear power transmission.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/514/1/012018