Deformation and energy absorption characteristics of thin-walled structures

Ahmed Elmarakbi*, Niki Fielding

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, to investigate the design of an energy absorbing street pole, a study of axial crush behaviour of metal thin longitudinal tubes (columns) are investigated along with a number of variables such as cross-sectional shape, shell thickness, as well as the velocity affects on columns. Tests have been carried out on the effects of bedded crumple initiators placed a various heights from the top of the column, in determining the desired value of peak load reduction, along with the effect in energy absorption of the column. With the conclusion of the desired variables for the design of an energy absorbing column, the columns are placed 90 degrees to that of the base of the model street column. Simulation of frontal impact of a vehicle and street column are analysed and compared to that of the energy absorbing street column concept. Studies are carried out by numerical simulation via the explicit finite element code LS-DYAN. Results compare the absorbed energy and the deflection of each variable, and recommend best design for the column structure which improved vehicle crashworthiness.

Original languageEnglish
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers(ASME)
Pages559-565
Number of pages7
Volume13
ISBN (Electronic)9780791838631
ISBN (Print)9780791843864
DOIs
Publication statusPublished - 1 Jan 2010
EventASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: 13 Nov 200919 Nov 2009

Conference

ConferenceASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period13/11/0919/11/09

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