Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)

Osteoporosis disease makes bone fragile and weak to withstand against load and bodyweight. Crack initiation and damage might occur depends on different morphological indices and types of load impose on trabecular bone. Fatigue analysis with strain-based method is applied for bovine trabecular bone w...

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Main Author:	Mostakhdemin, Mohammad
Format:	Thesis
Language:	English
Published:	2014
Subjects:	QM Human anatomy
Online Access:	http://eprints.utm.my/id/eprint/48542/1/MohammadMostakhdeminMFKA2014.pdf
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id	my-utm-ep.48542
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spelling	my-utm-ep.485422017-08-03T01:21:59Z Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking) 2014 Mostakhdemin, Mohammad QM Human anatomy Osteoporosis disease makes bone fragile and weak to withstand against load and bodyweight. Crack initiation and damage might occur depends on different morphological indices and types of load impose on trabecular bone. Fatigue analysis with strain-based method is applied for bovine trabecular bone with three different morphological indices to investigate correlation between fatigue life results and bone morphology. Two different analyses were performed, the first was static and the second was dynamic analysis. Axial load imposed on vertical, 45-degree and horizontal samples. Plastic strain in vertical sample initiated at 30% of total and reach to 5.97e-4 at 40% however, at 45-degree and horizontal initiated at 20% and 10% with values of 0.00479 and 0.211 respectively. Then fatigue analysis was performed on samples and S-N curve extracted. Results shows that fatigue life of vertical sample at high load amplitude (40% of total load) is 12262 cycles, however this value in 45- degree and horizontal samples decrease drastically to 357 and 5 cycles respectively. In the various morphological indices, BV/TV and BS/TS are counted as crucial factor in correlation between fatigue life and bone morphology. Vertical sample include of less porosity than 45-degree and horizontal, and because of this reason stress localized and plastic strain value in vertical sample value is far below than other two. Fatigue life decrease when porosity of structure increases. Plastic strain and high stresses had been appeared in arch and rod-like of trabeculae. 2014 Thesis http://eprints.utm.my/id/eprint/48542/ http://eprints.utm.my/id/eprint/48542/1/MohammadMostakhdeminMFKA2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:83067?queryType=vitalDismax&query=Numerical+analysis+of+fatigue+life+prediction+of+trabecular+bone+respect+to+physiological+activities+%28normal+walking%29&public=true masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QM Human anatomy
spellingShingle	QM Human anatomy Mostakhdemin, Mohammad Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
description	Osteoporosis disease makes bone fragile and weak to withstand against load and bodyweight. Crack initiation and damage might occur depends on different morphological indices and types of load impose on trabecular bone. Fatigue analysis with strain-based method is applied for bovine trabecular bone with three different morphological indices to investigate correlation between fatigue life results and bone morphology. Two different analyses were performed, the first was static and the second was dynamic analysis. Axial load imposed on vertical, 45-degree and horizontal samples. Plastic strain in vertical sample initiated at 30% of total and reach to 5.97e-4 at 40% however, at 45-degree and horizontal initiated at 20% and 10% with values of 0.00479 and 0.211 respectively. Then fatigue analysis was performed on samples and S-N curve extracted. Results shows that fatigue life of vertical sample at high load amplitude (40% of total load) is 12262 cycles, however this value in 45- degree and horizontal samples decrease drastically to 357 and 5 cycles respectively. In the various morphological indices, BV/TV and BS/TS are counted as crucial factor in correlation between fatigue life and bone morphology. Vertical sample include of less porosity than 45-degree and horizontal, and because of this reason stress localized and plastic strain value in vertical sample value is far below than other two. Fatigue life decrease when porosity of structure increases. Plastic strain and high stresses had been appeared in arch and rod-like of trabeculae.
format	Thesis
qualification_level	Master's degree
author	Mostakhdemin, Mohammad
author_facet	Mostakhdemin, Mohammad
author_sort	Mostakhdemin, Mohammad
title	Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
title_short	Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
title_full	Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
title_fullStr	Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
title_full_unstemmed	Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
title_sort	numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/48542/1/MohammadMostakhdeminMFKA2014.pdf
_version_	1747817415822016512

Numerical analysis of fatigue life prediction of trabecular bone respect to physiological activities (normal walking)

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