contributor author | K. D. Costa | |
contributor author | P. J. Hunter | |
contributor author | J. S. Wayne | |
contributor author | L. K. Waldman | |
contributor author | J. M. Guccione | |
contributor author | A. D. McCulloch | |
date accessioned | 2017-05-08T23:49:22Z | |
date available | 2017-05-08T23:49:22Z | |
date copyright | November, 1996 | |
date issued | 1996 | |
identifier issn | 0148-0731 | |
identifier other | JBENDY-25968#464_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/116529 | |
description abstract | A three-dimensional finite element method for nonlinear finite elasticity is presented using prolate spheroidal coordinates. For a thick-walled ellipsoidal model of passive anisotropic left ventricle, a high-order (cubic Hermite) mesh with 3 elements gave accurate continuous stresses and strains, with a 69 percent savings in degrees of freedom (dof) versus a 70-element standard low-order model. A custom mixed-order model offered 55 percent savings in dof and 39 percent savings in solution time compared with the low-order model. A nonsymmetric 3D model of the passive canine LV was solved using 16 high-order elements. Continuous nonhomogeneous stresses and strains were obtained within 1 hour on a laboratory workstation, with an estimated solution time of less than 4 hours to model end-systole. This method represents the first practical opportunity to solve large-scale anatomically detailed models for cardiac stress analysis. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | A Three-Dimensional Finite Element Method for Large Elastic Deformations of Ventricular Myocardium: II—Prolate Spheroidal Coordinates | |
type | Journal Paper | |
journal volume | 118 | |
journal issue | 4 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.2796032 | |
journal fristpage | 464 | |
journal lastpage | 472 | |
identifier eissn | 1528-8951 | |
keywords | Finite element methods | |
keywords | Deformation | |
keywords | Myocardium | |
keywords | Stress | |
keywords | Elasticity | |
keywords | Stress analysis (Engineering) | |
keywords | Degrees of freedom AND Three-dimensional models | |
tree | Journal of Biomechanical Engineering:;1996:;volume( 118 ):;issue: 004 | |
contenttype | Fulltext | |