3D dynamic simulation of crack propagation in extracorporeal shock wave lithotripsy

M. L.L. Wijerathne, Muneo Hori, Hide Sakaguchi, Kenji Oguni

研究成果: Conference article査読

7 被引用数 (Scopus)

抄録

Some experimental observations of Shock Wave Lithotripsy(SWL), which include 3D dynamic crack propagation, are simulated with the aim of reproducing fragmentation of kidney stones with SWL. Extracorporeal shock wave lithotripsy (ESWL) is the fragmentation of kidney stones by focusing an ultrasonic pressure pulse onto the stones. 3D models with fine discretization are used to accurately capture the high amplitude shear shock waves. For solving the resulting large scale dynamic crack propagation problem, PDS-FEM is used; it provides numerically efficient failure treatments. With a distributed memory parallel code of PDS-FEM, experimentally observed 3D photoelastic images of transient stress waves and crack patterns in cylindrical samples are successfully reproduced. The numerical crack patterns are in good agreement with the experimental ones, quantitatively. The results shows that the high amplitude shear waves induced in solid, by the lithotriptor generated shock wave, play a dominant role in stone fragmentation.

本文言語English
論文番号012120
ジャーナルIOP Conference Series: Materials Science and Engineering
10
1
DOI
出版ステータスPublished - 2014
外部発表はい
イベント9th World Congress on Computational Mechanics, WCCM 2010, Held in Conjuction with the 4th Asian Pacific Congress on Computational Mechanics, APCOM 2010 - Sydney, Australia
継続期間: 2010 7 192010 7 23

ASJC Scopus subject areas

  • 材料科学(全般)
  • 工学(全般)

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