Energy absorption of metallic and composite tubes

Optimising energy absorber has always been a research focus for many industries, for instance like automotive industry to improve crashworthiness and reduce fatality. Thin walled tubes are widely used as energy absorber as it is easy to manufacture, widely available and cost effective. Many studies...

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Main Author: Lee, Yong Kuang
Other Authors: Chai Gin Boay
Format: Final Year Project
Language:English
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/10356/70883
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-708832023-03-04T19:13:49Z Energy absorption of metallic and composite tubes Lee, Yong Kuang Chai Gin Boay School of Mechanical and Aerospace Engineering DRNTU::Engineering::Aeronautical engineering Optimising energy absorber has always been a research focus for many industries, for instance like automotive industry to improve crashworthiness and reduce fatality. Thin walled tubes are widely used as energy absorber as it is easy to manufacture, widely available and cost effective. Many studies focused on determining the most efficient energy absorber by using circular thin walled tubes and increasing number of layers of carbon fibre reinforced polymer (CFRP) or orienting the angles of CFRP layers. However other studies have shown that other geometries can outperform circular thin walled tubes. Therefore this study aims to compare different geometries (circular and square thin walled tubes) at different layers of CFRP under both axial and lateral loading conditions. The general trend observed is the total energy absorption and SEA increases for both geometries as the number of layers of CFRP increases. Results have shown that square geometries have promising performance in both total energy absorbed and specific energy absorption (SEA) as opposed to its circular counterpart. For lateral loading, crucial parameters like the critical displacement is observed to affect the specimen’s energy absorption capability greatly. However, a different trend is observed for both geometries upon the addition of CFRP layers, which will arrive at a different conclusion for the most effective energy absorber at higher number of CFRP layers. Bachelor of Engineering (Aerospace Engineering) 2017-05-12T02:30:19Z 2017-05-12T02:30:19Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/70883 en Nanyang Technological University 85 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Aeronautical engineering
spellingShingle DRNTU::Engineering::Aeronautical engineering
Lee, Yong Kuang
Energy absorption of metallic and composite tubes
description Optimising energy absorber has always been a research focus for many industries, for instance like automotive industry to improve crashworthiness and reduce fatality. Thin walled tubes are widely used as energy absorber as it is easy to manufacture, widely available and cost effective. Many studies focused on determining the most efficient energy absorber by using circular thin walled tubes and increasing number of layers of carbon fibre reinforced polymer (CFRP) or orienting the angles of CFRP layers. However other studies have shown that other geometries can outperform circular thin walled tubes. Therefore this study aims to compare different geometries (circular and square thin walled tubes) at different layers of CFRP under both axial and lateral loading conditions. The general trend observed is the total energy absorption and SEA increases for both geometries as the number of layers of CFRP increases. Results have shown that square geometries have promising performance in both total energy absorbed and specific energy absorption (SEA) as opposed to its circular counterpart. For lateral loading, crucial parameters like the critical displacement is observed to affect the specimen’s energy absorption capability greatly. However, a different trend is observed for both geometries upon the addition of CFRP layers, which will arrive at a different conclusion for the most effective energy absorber at higher number of CFRP layers.
author2 Chai Gin Boay
author_facet Chai Gin Boay
Lee, Yong Kuang
format Final Year Project
author Lee, Yong Kuang
author_sort Lee, Yong Kuang
title Energy absorption of metallic and composite tubes
title_short Energy absorption of metallic and composite tubes
title_full Energy absorption of metallic and composite tubes
title_fullStr Energy absorption of metallic and composite tubes
title_full_unstemmed Energy absorption of metallic and composite tubes
title_sort energy absorption of metallic and composite tubes
publishDate 2017
url http://hdl.handle.net/10356/70883
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