Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis

Bumper beam is a safety feature of a car where it functions to absorb impact energy during collision. It is important to improve the bumper beam design in order to improve vehicle safety. Natural fiber composite has been introduced to replace the use of conventional materials because it has advantag...

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Main Author:	Su, Muhammad Nasiruddin
Format:	Thesis
Language:	English English
Published:	2017
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/23084/1/Energy%20Absorption%20Analysis%20Of%20Low%20Speed%20Frontal%20Impact%20For%20Bumper%20Beam%20Through%20Finite%20Element%20Analysis%20-%20Muhammad%20Nasiruddin%20Su%20-%2024%20Pages.pdf http://eprints.utem.edu.my/id/eprint/23084/2/Energy%20Absorption%20Analysis%20Of%20Low%20Speed%20Frontal%20Impact%20For%20Bumper%20Beam%20Through%20Finite%20Element%20Analysis.pdf
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spelling	my-utem-ep.230842023-01-13T15:01:36Z Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis 2017 Su, Muhammad Nasiruddin T Technology (General) TL Motor vehicles. Aeronautics. Astronautics Bumper beam is a safety feature of a car where it functions to absorb impact energy during collision. It is important to improve the bumper beam design in order to improve vehicle safety. Natural fiber composite has been introduced to replace the use of conventional materials because it has advantages of low density, high specific strength and stiffness. Natural fibers like kenaf and hemp have low cost and low density which can replace the glass fibers. Bertam leaves composite has not been explored before in automotive bumper beam. This thesis provided information on different bumper beam design structures focusing on energy absorption analysis. The aim of the research is to determine the capability of energy absorption for five conceptual cross section designs for low speed impact of three materials namely low carbon steel, bertam leaves fiber reinforced polyester and sheet moulding compound. Explicit dynamic simulation was adopted using Ansys LS Dyna software to simulate the frontal low speed impact of bumper beam according to Economic Commission for Europe Regulation No 42. Five new cross section designs have been proposed. AHPTOPSIS method was used to determine best design through identified product design specification of frontal low speed impact low carbon steel bumper beam. Through the seven elements identified in product design specification using AHP-TOPSIS method, cross section 4 (C4) design of bumper beam was the best with Ci value of 0.564. Four parameters namely cross section, wall thickness, materials and ribs influenced the energy absorption and were taken into account for further study. Closed section bumper was slightly better compared to open section bumper beam in energy absorption. C1 closed section bumper beam was capable of absorbing up to 82.79 % of impact energy. Composite material can reduce the bumper beam weight where the bertam leaves fiber reinforced polyester decreased the weight of bumper beam by 87.04 % and sheet moulding compound decreased the weight of bumper beam by 76.75 % compared to low carbon steel. Both composite material with wall thickness of 1.2 mm does not suitable for consideration in automotive bumper beam as the maximum deflection exceed the limit set 30 mm. For wall thickness, as the wall thickness increased, the maximum deflection of bumper beam decreased as well. Two ribs design was added to the C4 bumper beam namely vertical and horizontal rib. A horizontal rib has the highest energy absorption capability which is improved 26.93 % and deflection of bumper beam improved 2 % to 9 %. This thesis can be used as a guideline to design and selecting the best design automotive bumper beam based on the parameters studied and method selection used to determine the best design. UTeM 2017 Thesis http://eprints.utem.edu.my/id/eprint/23084/ http://eprints.utem.edu.my/id/eprint/23084/1/Energy%20Absorption%20Analysis%20Of%20Low%20Speed%20Frontal%20Impact%20For%20Bumper%20Beam%20Through%20Finite%20Element%20Analysis%20-%20Muhammad%20Nasiruddin%20Su%20-%2024%20Pages.pdf text en public http://eprints.utem.edu.my/id/eprint/23084/2/Energy%20Absorption%20Analysis%20Of%20Low%20Speed%20Frontal%20Impact%20For%20Bumper%20Beam%20Through%20Finite%20Element%20Analysis.pdf text en validuser http://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=107274 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Manufacturing Engineering
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Su, Muhammad Nasiruddin Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis
description	Bumper beam is a safety feature of a car where it functions to absorb impact energy during collision. It is important to improve the bumper beam design in order to improve vehicle safety. Natural fiber composite has been introduced to replace the use of conventional materials because it has advantages of low density, high specific strength and stiffness. Natural fibers like kenaf and hemp have low cost and low density which can replace the glass fibers. Bertam leaves composite has not been explored before in automotive bumper beam. This thesis provided information on different bumper beam design structures focusing on energy absorption analysis. The aim of the research is to determine the capability of energy absorption for five conceptual cross section designs for low speed impact of three materials namely low carbon steel, bertam leaves fiber reinforced polyester and sheet moulding compound. Explicit dynamic simulation was adopted using Ansys LS Dyna software to simulate the frontal low speed impact of bumper beam according to Economic Commission for Europe Regulation No 42. Five new cross section designs have been proposed. AHPTOPSIS method was used to determine best design through identified product design specification of frontal low speed impact low carbon steel bumper beam. Through the seven elements identified in product design specification using AHP-TOPSIS method, cross section 4 (C4) design of bumper beam was the best with Ci value of 0.564. Four parameters namely cross section, wall thickness, materials and ribs influenced the energy absorption and were taken into account for further study. Closed section bumper was slightly better compared to open section bumper beam in energy absorption. C1 closed section bumper beam was capable of absorbing up to 82.79 % of impact energy. Composite material can reduce the bumper beam weight where the bertam leaves fiber reinforced polyester decreased the weight of bumper beam by 87.04 % and sheet moulding compound decreased the weight of bumper beam by 76.75 % compared to low carbon steel. Both composite material with wall thickness of 1.2 mm does not suitable for consideration in automotive bumper beam as the maximum deflection exceed the limit set 30 mm. For wall thickness, as the wall thickness increased, the maximum deflection of bumper beam decreased as well. Two ribs design was added to the C4 bumper beam namely vertical and horizontal rib. A horizontal rib has the highest energy absorption capability which is improved 26.93 % and deflection of bumper beam improved 2 % to 9 %. This thesis can be used as a guideline to design and selecting the best design automotive bumper beam based on the parameters studied and method selection used to determine the best design.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Su, Muhammad Nasiruddin
author_facet	Su, Muhammad Nasiruddin
author_sort	Su, Muhammad Nasiruddin
title	Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis
title_short	Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis
title_full	Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis
title_fullStr	Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis
title_full_unstemmed	Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis
title_sort	energy absorption analysis of low speed frontal impact for bumper beam through finite element analysis
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Manufacturing Engineering
publishDate	2017
url	http://eprints.utem.edu.my/id/eprint/23084/1/Energy%20Absorption%20Analysis%20Of%20Low%20Speed%20Frontal%20Impact%20For%20Bumper%20Beam%20Through%20Finite%20Element%20Analysis%20-%20Muhammad%20Nasiruddin%20Su%20-%2024%20Pages.pdf http://eprints.utem.edu.my/id/eprint/23084/2/Energy%20Absorption%20Analysis%20Of%20Low%20Speed%20Frontal%20Impact%20For%20Bumper%20Beam%20Through%20Finite%20Element%20Analysis.pdf
_version_	1776103118048591872

Energy Absorption Analysis Of Low Speed Frontal Impact For Bumper Beam Through Finite Element Analysis

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