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A universal formulation for indentation whatever the indenter geometry

Abstract : We propose in this paper a geometrical equivalence between a shape described by a power law and a conical geometry. A theoretical and numerical study has allowed us to generalize an equivalence between the conical geometrical parameter tanβ and the spherical or power law shape geometrical parameter ac/R. Moreover, in order to superpose indentation data whatever the geometry, a new pile-up parameter Δ has been introduced. For one set of mechanical properties of the tested sample, this new formulation leads to a perfect superposition between conical, power law shape and spherical indentation data. At the end of this paper, we propose a comparison between the results proposed in literature and the present formulation.
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Submitted on : Thursday, May 28, 2015 - 11:21:19 AM
Last modification on : Friday, July 10, 2020 - 4:22:05 PM
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Xavier Hernot, Olivier Bartier, Gerard Mauvoisin, Jean-Marc Collin. A universal formulation for indentation whatever the indenter geometry. Mechanics of Materials, Elsevier, 2015, 81, pp.101-109. ⟨10.1016/j.mechmat.2014.11.006⟩. ⟨hal-01157486⟩

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