Publication detail
FEA of prestressed abdominal aortic aneurysm
POLZER, S. BURŠA, J.
Czech title
FEA předepnutého aneurysmatu břišní aorty
English title
FEA of prestressed abdominal aortic aneurysm
Type
conference paper
Language
en
Original abstract
Stress distribution in the abdominal aortic aneurysm (AAA) is about to replace the criterion of the maximum AAA diameter for planning the surgery. The geometry for such FEA is obtained from CT images, where the AAA is shown when loaded by a blood pressure. However, FEA needs a load free geometry as an input. The stress distribution obtained by using the unloaded geometry is more realistic than results obtained by FEA where geometry from the CT is considered to be load free. Several different approaches of how to obtain the unloaded geometry has been published over last years. However, they require to define a new element or even to redefine the FE algorithm itself. We present a simpler algorithm but its major advantage is the use of a commercially available software; it can find the load free geometry of AAAs by using standard elements and regular FE algorithm.
Czech abstract
nový algoritumus pro nalezení nezatížené geomterie eanurysmatu, který je použitelný v komerčních FE softwarech
English abstract
Stress distribution in the abdominal aortic aneurysm (AAA) is about to replace the criterion of the maximum AAA diameter for planning the surgery. The geometry for such FEA is obtained from CT images, where the AAA is shown when loaded by a blood pressure. However, FEA needs a load free geometry as an input. The stress distribution obtained by using the unloaded geometry is more realistic than results obtained by FEA where geometry from the CT is considered to be load free. Several different approaches of how to obtain the unloaded geometry has been published over last years. However, they require to define a new element or even to redefine the FE algorithm itself. We present a simpler algorithm but its major advantage is the use of a commercially available software; it can find the load free geometry of AAAs by using standard elements and regular FE algorithm.
Keywords in Czech
mkp; nezatížená geometrie; aneurysma břišní aorty
Keywords in English
FEA; abdominal aortic aneurysm; unloaded geometry;
RIV year
2010
Released
04.10.2010
ISBN
978-80-87012-26-0
Book
Human biomechanics 2010
Pages from–to
109–110
Pages count
2
BIBTEX
@inproceedings{BUT35123,
author="Stanislav {Polzer} and Jiří {Burša},
title="FEA of prestressed abdominal aortic aneurysm",
booktitle="Human biomechanics 2010",
year="2010",
month="October",
pages="109--110",
isbn="978-80-87012-26-0"
}