Finite element analysis of a lightweight box structure / Mohd Amir Bohari

A lightweight box with dimension of 1200mm x 400mm x 120mm consisting of 4 ribs, 8 stringers and 2 spar webs was designed and fabricated. The structural behaviors were studied in terms of stress and deflection by theoretical and Finite Element Analysis (FEA). FEA analysis was carried out based on 11...

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Main Author:	Bohari, Mohd Amir
Format:	Thesis
Language:	English
Published:	2003
Subjects:	Finite element method
Online Access:	http://ir.uitm.edu.my/id/eprint/21169/ http://ir.uitm.edu.my/id/eprint/21169/1/TD_MOHD%20AMIR%20BOHARI%20EM%2003_5.pdf

id	uitm-21169
recordtype	eprints
spelling	uitm-211692018-10-16T02:00:49Z http://ir.uitm.edu.my/id/eprint/21169/ Finite element analysis of a lightweight box structure / Mohd Amir Bohari Bohari, Mohd Amir Finite element method A lightweight box with dimension of 1200mm x 400mm x 120mm consisting of 4 ribs, 8 stringers and 2 spar webs was designed and fabricated. The structural behaviors were studied in terms of stress and deflection by theoretical and Finite Element Analysis (FEA). FEA analysis was carried out based on 116 Elements consisting of 60 Shell41 type (for skin and ribs), 8 shell28 (for spar webs), and 48 link8 type (for stringer and spar flank). The structural integrity was tested by measuring the strain of 4 strain and rosette gauges at 5 different locations. The stress values from the theoretical and FEA are in good agreement. Experimental results showed good agreement with the predicted values at locations 1, 3 and 5. However the experimental stresses at location 2 and 4 are deviated by 43 and 84% respectively from the predicted values. Such high deviations indicate a local effect, since location 2 is closed to the rivet and 4 are on the stringer. Meanwhile, location 1 and 3 are on the skin and 5 was the rosette at the web. The experimental deflection values at all loads are significantly deviated from.the predicted values. Therefore the theoretical approach has got to be modified by taking several factors such as the effect of the rivet on the geometry and fabrication imperfection into consideration. The experimental values are higher than the predicted values. 2003 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/21169/1/TD_MOHD%20AMIR%20BOHARI%20EM%2003_5.pdf Bohari, Mohd Amir (2003) Finite element analysis of a lightweight box structure / Mohd Amir Bohari. Degree thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Finite element method
spellingShingle	Finite element method Bohari, Mohd Amir Finite element analysis of a lightweight box structure / Mohd Amir Bohari
description	A lightweight box with dimension of 1200mm x 400mm x 120mm consisting of 4 ribs, 8 stringers and 2 spar webs was designed and fabricated. The structural behaviors were studied in terms of stress and deflection by theoretical and Finite Element Analysis (FEA). FEA analysis was carried out based on 116 Elements consisting of 60 Shell41 type (for skin and ribs), 8 shell28 (for spar webs), and 48 link8 type (for stringer and spar flank). The structural integrity was tested by measuring the strain of 4 strain and rosette gauges at 5 different locations. The stress values from the theoretical and FEA are in good agreement. Experimental results showed good agreement with the predicted values at locations 1, 3 and 5. However the experimental stresses at location 2 and 4 are deviated by 43 and 84% respectively from the predicted values. Such high deviations indicate a local effect, since location 2 is closed to the rivet and 4 are on the stringer. Meanwhile, location 1 and 3 are on the skin and 5 was the rosette at the web. The experimental deflection values at all loads are significantly deviated from.the predicted values. Therefore the theoretical approach has got to be modified by taking several factors such as the effect of the rivet on the geometry and fabrication imperfection into consideration. The experimental values are higher than the predicted values.
format	Thesis
author	Bohari, Mohd Amir
author_facet	Bohari, Mohd Amir
author_sort	Bohari, Mohd Amir
title	Finite element analysis of a lightweight box structure / Mohd Amir Bohari
title_short	Finite element analysis of a lightweight box structure / Mohd Amir Bohari
title_full	Finite element analysis of a lightweight box structure / Mohd Amir Bohari
title_fullStr	Finite element analysis of a lightweight box structure / Mohd Amir Bohari
title_full_unstemmed	Finite element analysis of a lightweight box structure / Mohd Amir Bohari
title_sort	finite element analysis of a lightweight box structure / mohd amir bohari
publishDate	2003
url	http://ir.uitm.edu.my/id/eprint/21169/ http://ir.uitm.edu.my/id/eprint/21169/1/TD_MOHD%20AMIR%20BOHARI%20EM%2003_5.pdf
first_indexed	2023-09-18T23:06:00Z
last_indexed	2023-09-18T23:06:00Z
_version_	1777418486489808896

Finite element analysis of a lightweight box structure / Mohd Amir Bohari

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