Contact of nominally flat surfaces

@article{Greenwood1966ContactON,
  title={Contact of nominally flat surfaces},
  author={J. A. Greenwood and J. P. H. Williamson},
  journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences},
  year={1966},
  volume={295},
  pages={300 - 319}
}
  • J. Greenwood, J. Williamson
  • Published 6 December 1966
  • Materials Science
  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
It is usually assumed that the real area of contact between two nominally flat metal surfaces is determined by the plastic deformation of their highest asperities. This leads at once to the result that the real area of contact is directly proportional to the load and independent of the apparent area—a result with many applications in the theories of electric contacts and friction. Archard pointed out that plastic deformation could not be the universal rule, and introduced a model which showed… 

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References

SHOWING 1-3 OF 3 REFERENCES
Role of Displaced Metal in the Sliding of Flat Metal Surfaces
This paper describes an investigation of the interaction between pairs of flat metal surfaces sliding against one another. The experiments show that the junctions which are formed when the surfaces
Interaction of Sliding Metal Surfaces
The friction of sliding metal surfaces is often attributed to the formation and shearing of welded junctions between the surfaces. This paper describes a more detailed investigation of the phenomena
Electric contacts handbook