Indentation of Irreversibly Compressible Material: Computer Simulation

Using the theory of plasticity for porous bodies and finite-element computer simulation, the stress–strain state around spherical and conical indenters has been studied for different mechanical properties of indented material. Porosity distribution near the indenter depending on the properties of the porous body and on its friction against the indenter has been analyzed. Load–displacement curves with respect to tendency to dilatancy and contact friction are shown. The development and shape of bulks around the indenter have been studied.