Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors

Considerable research interest has been directed towards the use of composite for crashworthiness applications, because they can be designed to provide impact energy absorption capabilities which are superior to those of metals when compared on weight basis. The use of composite parts in structur...

Full description

Saved in:

Bibliographic Details
Main Author:	Talebi Taher, Siavash
Format:	Thesis
Language:	English English
Published:	2005
Subjects:	Composite materials Energy industries
Online Access:	http://psasir.upm.edu.my/id/eprint/6032/1/FK_2005_24.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.6032
record_format	uketd_dc
spelling	my-upm-ir.60322023-01-05T03:37:12Z Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors 2005-09 Talebi Taher, Siavash Considerable research interest has been directed towards the use of composite for crashworthiness applications, because they can be designed to provide impact energy absorption capabilities which are superior to those of metals when compared on weight basis. The use of composite parts in structural and semi-structure applications is becoming more widespread throughout the automotives, aircraft and space vehicles. In this study, an innovative lightweight composite energy-absorbing keel beam system has been developed to be retrofitted in aircraft and helicopter in order to improve their crashworthiness performance. The developed system consists of everting stringer and keel beam. The sub floor seat rails were designed as everting stringer to guide and control the failure mechanisms at pre-crush and post crush failure stages of composite keel beam webs and core. Polyurethane foam was employed to fill the core of the beam to eliminate any hypothesis of global buckling. The numerical prediction was obtained using commercially available finite element analysis software. The experimental data are correlated with predictions from finite element model and analytical solution. An acceptable agreement between the experimental and computational results was obtained. For all structures considered classical axial collapse eigen values were computed. The results showed that the crushing behaviour of the developed system is found to be sensitive to the change in keel beam core cross-section. Laminate sequence has a significant influence on the failure mode types, average crush loads and energy absorption capability of composite keel beam. The desired energy absorbing mechanism revealed that the innovated system can be used for aircraft and helicopter and meet the requirements, together with substantial weight saving. Composite materials Energy industries 2005-09 Thesis http://psasir.upm.edu.my/id/eprint/6032/ http://psasir.upm.edu.my/id/eprint/6032/1/FK_2005_24.pdf text en public masters Universiti Putra Malaysia Composite materials Energy industries Engineering English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Composite materials Energy industries
spellingShingle	Composite materials Energy industries Talebi Taher, Siavash Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors
description	Considerable research interest has been directed towards the use of composite for crashworthiness applications, because they can be designed to provide impact energy absorption capabilities which are superior to those of metals when compared on weight basis. The use of composite parts in structural and semi-structure applications is becoming more widespread throughout the automotives, aircraft and space vehicles. In this study, an innovative lightweight composite energy-absorbing keel beam system has been developed to be retrofitted in aircraft and helicopter in order to improve their crashworthiness performance. The developed system consists of everting stringer and keel beam. The sub floor seat rails were designed as everting stringer to guide and control the failure mechanisms at pre-crush and post crush failure stages of composite keel beam webs and core. Polyurethane foam was employed to fill the core of the beam to eliminate any hypothesis of global buckling. The numerical prediction was obtained using commercially available finite element analysis software. The experimental data are correlated with predictions from finite element model and analytical solution. An acceptable agreement between the experimental and computational results was obtained. For all structures considered classical axial collapse eigen values were computed. The results showed that the crushing behaviour of the developed system is found to be sensitive to the change in keel beam core cross-section. Laminate sequence has a significant influence on the failure mode types, average crush loads and energy absorption capability of composite keel beam. The desired energy absorbing mechanism revealed that the innovated system can be used for aircraft and helicopter and meet the requirements, together with substantial weight saving.
format	Thesis
qualification_level	Master's degree
author	Talebi Taher, Siavash
author_facet	Talebi Taher, Siavash
author_sort	Talebi Taher, Siavash
title	Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors
title_short	Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors
title_full	Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors
title_fullStr	Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors
title_full_unstemmed	Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors
title_sort	development of a new composite energy-absorber system for aircraft and helicopter sub-floors
granting_institution	Universiti Putra Malaysia
granting_department	Engineering
publishDate	2005
url	http://psasir.upm.edu.my/id/eprint/6032/1/FK_2005_24.pdf
_version_	1776100250465861632

Development of a New Composite Energy-Absorber System for Aircraft and Helicopter Sub-Floors

Similar Items