Abstract
The stresses and deformations in an anisotropic half-space indented by a flat punch are calculated for material parameters that characterize a transversely crushed ductile honeycomb. After a small range of elastic deformations, the honeycomb crushes in localized bands that extend in characteristic directions within the half-space. Large geometric changes in the crushed cells modify their mechanical properties and constrain the deformation of adjacent cells. A lower estimate of the indentation force is obtained by comparing the peak stress beneath the indenter with the yield strength of the honeycomb. An upper estimate of the indentation force is calculated by equating the work-rate of indentation with the dissipation-rate of a flow-field that is compatible with the crushing bands.
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