Concept of the ultimate velocity of fracture fronts in the analysis of cylindrical cavity expansion in a brittle material

摘要

Based on the concept of the ultimate velocities of fracture fronts, we investigate the cylindrical cavity expansion in a brittle material. Boundary problems solutions are obtained for the regions which differ by the state of material. We present the dependence of the cylindrical cavity expansion pressure on the expansion velocity in a ceramic material in comparison with a spherical cavity.