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Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique

The rupture of the abdominal aortic aneurysm (AAA) occurs when the acting stress exceeds the ultimate stress of the wall. Therefore, the ability to accurately estimate the acting stress is very useful to predict the rupture of an AAA. In this study, previously developed equation which included the e...

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Main Author: S. K. Elghariani, Badreddin Giuma
Format: Thesis
Language:English
Published: 2013
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Online Access:http://eprints.utm.my/id/eprint/35840/1/BadreddinGiumaS.KElgharianiMFKM2013.pdf
http://eprints.utm.my/id/eprint/35840/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:93516?queryType=vitalDismax&query=Enhanced+stress+prediction+correlation+for+abdominal+aortic+aneurysm+&public=true
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spelling my.utm.358402021-07-21T02:22:11Z http://eprints.utm.my/id/eprint/35840/ Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique S. K. Elghariani, Badreddin Giuma Unspecified The rupture of the abdominal aortic aneurysm (AAA) occurs when the acting stress exceeds the ultimate stress of the wall. Therefore, the ability to accurately estimate the acting stress is very useful to predict the rupture of an AAA. In this study, previously developed equation which included the effect of inter lumen thrombus, systolic pressure, maximum aneurysm diameter, wall thickness, asymmetry parameter, is improved by applying fully coupling-fluid structure interaction technique (f-FSI). Further improvements of the equation is also done by including the aneurysm length and iliac bifurcation angle. Various case studies are analyzed to investigate the hemodynamic behavior as well as stress distribution on the wall using modified models as well as Computed Tomography scan (CT scan). The results show that the geometry parameters as well as hypertension affect the flow pattern, displacement and stress distribution. Exponential correlation is observed between the maximum acting stress and the asymmetric parameter. In addition, a linear correlation with the maximum aneurysm, aneurysm length, iliac bifurcation angle and wall thickness is determined. The parametric correlations confirm that these geometry parameters are important parameters to predict the maximum acting stress. The inclusion of the effect of hemodynamic by using f-FSI technique predicted a higher maximum acting stress in AAA wall compared to previous equations. Consequently, the current research has concluded that the newly developed equation can be easily used for rupture prediction with even more accurate results than the currently used clinical tools. 2013 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/35840/1/BadreddinGiumaS.KElgharianiMFKM2013.pdf S. K. Elghariani, Badreddin Giuma (2013) Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique. PhD thesis, Universiti Teknologi Malaysia, Faculty of Mechanical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:93516?queryType=vitalDismax&query=Enhanced+stress+prediction+correlation+for+abdominal+aortic+aneurysm+&public=true
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic Unspecified
spellingShingle Unspecified
S. K. Elghariani, Badreddin Giuma
Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
description The rupture of the abdominal aortic aneurysm (AAA) occurs when the acting stress exceeds the ultimate stress of the wall. Therefore, the ability to accurately estimate the acting stress is very useful to predict the rupture of an AAA. In this study, previously developed equation which included the effect of inter lumen thrombus, systolic pressure, maximum aneurysm diameter, wall thickness, asymmetry parameter, is improved by applying fully coupling-fluid structure interaction technique (f-FSI). Further improvements of the equation is also done by including the aneurysm length and iliac bifurcation angle. Various case studies are analyzed to investigate the hemodynamic behavior as well as stress distribution on the wall using modified models as well as Computed Tomography scan (CT scan). The results show that the geometry parameters as well as hypertension affect the flow pattern, displacement and stress distribution. Exponential correlation is observed between the maximum acting stress and the asymmetric parameter. In addition, a linear correlation with the maximum aneurysm, aneurysm length, iliac bifurcation angle and wall thickness is determined. The parametric correlations confirm that these geometry parameters are important parameters to predict the maximum acting stress. The inclusion of the effect of hemodynamic by using f-FSI technique predicted a higher maximum acting stress in AAA wall compared to previous equations. Consequently, the current research has concluded that the newly developed equation can be easily used for rupture prediction with even more accurate results than the currently used clinical tools.
format Thesis
author S. K. Elghariani, Badreddin Giuma
author_facet S. K. Elghariani, Badreddin Giuma
author_sort S. K. Elghariani, Badreddin Giuma
title Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
title_short Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
title_full Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
title_fullStr Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
title_full_unstemmed Enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
title_sort enhanced stress prediction correlation for abdominal aortic aneurysm using fluid structure interaction technique
publishDate 2013
url http://eprints.utm.my/id/eprint/35840/1/BadreddinGiumaS.KElgharianiMFKM2013.pdf
http://eprints.utm.my/id/eprint/35840/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:93516?queryType=vitalDismax&query=Enhanced+stress+prediction+correlation+for+abdominal+aortic+aneurysm+&public=true
_version_ 1706956951003332608
score 13.211869

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