Crushing Behavior of Hexagonal Composite Tubes

An experimental and finite element analysis was carried out to investigate effect of hexagonal composite tube dimension on failure mode and energy absorption capability. Throughout this investigation, the hexagonal tube with different aspect ratio of length to thickness (Llt) varying from 30 to 1...

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Main Author:	Al Kabir, Munir Faraj M.
Format:	Thesis
Language:	English
Published:	2004
Subjects:	Tubes - Thermodynamics - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/5920/1/FK_2004_38%20IR.pdf
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id	my-upm-ir.5920
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spelling	my-upm-ir.59202022-02-07T07:29:47Z Crushing Behavior of Hexagonal Composite Tubes 2004-03 Al Kabir, Munir Faraj M. An experimental and finite element analysis was carried out to investigate effect of hexagonal composite tube dimension on failure mode and energy absorption capability. Throughout this investigation, the hexagonal tube with different aspect ratio of length to thickness (Llt) varying from 30 to 100 and different hexagonal angles varying from 35" to 60" in 5" increments were investigated under the axial load condition. All the hexagonal tubes tested were fabricated from fabric plain weave /epoxy. The effect of hexagonal geometry on the load carrying capacity and energy absorption capability was presented. A finite element model to predict the load carrying capacity, deformation mesh, stress contours at pre-crush stage of hexagonal tube under an axial load condition were developed.Experimental results show that the hexagonal geometry (length to side diminutions) increases the load carrying capacity by 32.0, 13.8, 2.land 18.7% respectively for hexagonal side angle of 35", 45", 50°, and 55" respectively, the load carrying capacity is reduce by 49.6 and 29.6% for hexagonal side angles of 4O0and 6O0repectively. The energy absorption also increases by 1.42 and 1.5 % for hexagonal side angles of 35" and 6O0respectivelyand energy absorption is reduced by 48.6, 11.6, 20.0and 46,7% respectively for hexagonal side angle of 40°, 45", 50" and 55" respectively. Finite element model predictions are correlated with experimental results. The variation between the experimental and finite element is in the range of 5.9% to 9.8% .The effect of geometry of fabric plain weavelepoxy (Ring Chain System With Hexagonal Shape) on crushing behavior, energy absorption capability, crush failure loads and failure modes were also investigated. Failure modes were examined using several photographs taken during the crushing stages for each experiment. The main failures modes that occured during the experiment are local buckling, catastrophic and matrix failure modes. Tubes - Thermodynamics - Case studies 2004-03 Thesis http://psasir.upm.edu.my/id/eprint/5920/ http://psasir.upm.edu.my/id/eprint/5920/1/FK_2004_38%20IR.pdf text en public masters Universiti Putra Malaysia Tubes - Thermodynamics - Case studies Engineering Hamouda, Abdel Magid Salem
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Hamouda, Abdel Magid Salem
topic	Tubes - Thermodynamics - Case studies
spellingShingle	Tubes - Thermodynamics - Case studies Al Kabir, Munir Faraj M. Crushing Behavior of Hexagonal Composite Tubes
description	An experimental and finite element analysis was carried out to investigate effect of hexagonal composite tube dimension on failure mode and energy absorption capability. Throughout this investigation, the hexagonal tube with different aspect ratio of length to thickness (Llt) varying from 30 to 100 and different hexagonal angles varying from 35" to 60" in 5" increments were investigated under the axial load condition. All the hexagonal tubes tested were fabricated from fabric plain weave /epoxy. The effect of hexagonal geometry on the load carrying capacity and energy absorption capability was presented. A finite element model to predict the load carrying capacity, deformation mesh, stress contours at pre-crush stage of hexagonal tube under an axial load condition were developed.Experimental results show that the hexagonal geometry (length to side diminutions) increases the load carrying capacity by 32.0, 13.8, 2.land 18.7% respectively for hexagonal side angle of 35", 45", 50°, and 55" respectively, the load carrying capacity is reduce by 49.6 and 29.6% for hexagonal side angles of 4O0and 6O0repectively. The energy absorption also increases by 1.42 and 1.5 % for hexagonal side angles of 35" and 6O0respectivelyand energy absorption is reduced by 48.6, 11.6, 20.0and 46,7% respectively for hexagonal side angle of 40°, 45", 50" and 55" respectively. Finite element model predictions are correlated with experimental results. The variation between the experimental and finite element is in the range of 5.9% to 9.8% .The effect of geometry of fabric plain weavelepoxy (Ring Chain System With Hexagonal Shape) on crushing behavior, energy absorption capability, crush failure loads and failure modes were also investigated. Failure modes were examined using several photographs taken during the crushing stages for each experiment. The main failures modes that occured during the experiment are local buckling, catastrophic and matrix failure modes.
format	Thesis
qualification_level	Master's degree
author	Al Kabir, Munir Faraj M.
author_facet	Al Kabir, Munir Faraj M.
author_sort	Al Kabir, Munir Faraj M.
title	Crushing Behavior of Hexagonal Composite Tubes
title_short	Crushing Behavior of Hexagonal Composite Tubes
title_full	Crushing Behavior of Hexagonal Composite Tubes
title_fullStr	Crushing Behavior of Hexagonal Composite Tubes
title_full_unstemmed	Crushing Behavior of Hexagonal Composite Tubes
title_sort	crushing behavior of hexagonal composite tubes
granting_institution	Universiti Putra Malaysia
granting_department	Engineering
publishDate	2004
url	http://psasir.upm.edu.my/id/eprint/5920/1/FK_2004_38%20IR.pdf
_version_	1747810509650919424

Crushing Behavior of Hexagonal Composite Tubes

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