Plastic compression of spheres
- 1 October 1984
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 49 (4) , 493-503
- https://doi.org/10.1080/01418618408236551
Abstract
An experimental investigation is reported of the compression of metal spheres between smooth parallel platens. Measurements have been made of the mean contact pressure P as a function of the radius of the contact area a. For work-hardened metals, P was found to increase to a maximum value of 0·7 to 0·8 times the Vickers hardness of the sphere material, at a value of a/R ≃ 0·20 to 0·28, where R is the radius of the sphere before deformation. The contact pressure then declined steadily with increasing a/R. Annealed metals showed oither no maximum in pressure, or a very broad peak. Qualitative explanations of these results are given by analogy with other deformation geometries.Keywords
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