1. Non-hardenable materials

1.1 Flat indentation

To clarify the flow morphology according to indenter geometry and friction, let's first consider the case of indentation by a dihedron: each slice of material in a plane perpendicular to the edge of the dihedron undergoes the same deformation (plane deformation) and we know two simple and possible forms of plastic flow (figure 1 ) described by the sliding line field method [14] . The deformation zone is located in the immediate vicinity of the indentor: here, the material is driven...