Numerical Analysis of Kidney Stone Fragmentation by Short Pulse Impingement: Effect of Geometry
To better understand the behavior of stresses generated inside a kidney stone by direct pulse impingement during extracorporeal shock wave lithotripsy (ESWL), numerical analyses are performed in this work. LS-DYNA, an explicit Finite Element code for non-linear dynamic analysis is employed to investigate the effect of stone geometry to the stress field evolution inside the stone when subjected to short pulse wave. Circular disks with parts removed from the front and the back are used to model the stones that assumed have already had initial fracture. The other variation of spherical geometry such as ellipse is also considered in the numerical calculation.
Ichsan Setya Putra and Djoko Suharto
S. Mihradi et al., "Numerical Analysis of Kidney Stone Fragmentation by Short Pulse Impingement: Effect of Geometry", Key Engineering Materials, Vols. 306-308, pp. 1283-1288, 2006