A universal formulation for indentation whatever the indenter geometry

作者：Hernot X; Bartier O; Mauvoisin G; Collin J M^*

来源：Mechanics of Materials, 2015, 81: 101-109.

DOI：10.1016/j.mechmat.2014.11.006

• Conical indentation
• Spherical indentation
• Geometrical equivalence
• Universal formulation

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 tan beta and the spherical or power law shape geometrical parameter a(c)/R. Moreover, in order to superpose indentation data whatever the geometry, a new pile-up parameter Delta has been introduced. For one set of mechanical properties of the tested sample, this new formulation leads to a perfect super-position 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.

• 出版日期2015-2