Three-dimensional fracture and fragmentation of artificial kidney stones
The brittle fracture of a gypsum cylinder, which is used as an artificial kidney stone in lithotripsy research, is simulated by the use of the finite element method. The cylinder is submerged in water and is subjected to a pressure front parallel to one of its planar faces. The stresses induced by the pressure wave lead to fracture in the interior of the cylinder, with the formation of a spall plane located about 2/3 of the length from the face on which the pressure is applied. We show that the simulation reproduces the salient features of experimental observations.
© 2006 IOP Publishing Limited We are grateful for the financial support provided by the US Department of Energy through Caltech's ASC Center for the Simulation of the Dynamic Response of Materials and the US National Institute of Health through grant DK43881. SciDAC 2006, SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING 25–29 June 2006, Denver, Colorado, USA, Journal of Physics: Conference Series, Volume 46, 2006