The effect of the implementation of circular holes as crush initiators to the crushing characteristics of mild steel square tubes: Experimental and numerical simulation

Mamalis, AG; Manolakos, DE; Spentzas, KN; Ioannidis, MB; Koutroubakis, S; Kostazos, PK

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Manolakos, DE	en
dc.contributor.author	Spentzas, KN	en
dc.contributor.author	Ioannidis, MB	en
dc.contributor.author	Koutroubakis, S	en
dc.contributor.author	Kostazos, PK	en
dc.date.accessioned	2014-03-01T01:32:09Z
dc.date.available	2014-03-01T01:32:09Z
dc.date.issued	2009	en
dc.identifier.issn	1358-8265	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20048
dc.subject	Crash analysis	en
dc.subject	Crashworthiness	en
dc.subject	Crush initiators	en
dc.subject	FE analysis	en
dc.subject	Thin-walled structures	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Axial collapse	en
dc.subject.other	Axial loading	en
dc.subject.other	Cargo damage	en
dc.subject.other	Circular holes	en
dc.subject.other	Crash analysis	en
dc.subject.other	Crush initiators	en
dc.subject.other	Experimental data	en
dc.subject.other	FE analysis	en
dc.subject.other	Finite element simulations	en
dc.subject.other	Geometrical discontinuity	en
dc.subject.other	Hole diameter	en
dc.subject.other	LS-DYNA	en
dc.subject.other	Mild steel	en
dc.subject.other	Numerical models	en
dc.subject.other	Numerical simulation	en
dc.subject.other	Peak load	en
dc.subject.other	Quasi-static	en
dc.subject.other	Response characteristic	en
dc.subject.other	Safety limits	en
dc.subject.other	Square steel tube	en
dc.subject.other	Steel tube	en
dc.subject.other	Structural component	en
dc.subject.other	Test specimens	en
dc.subject.other	Testing results	en
dc.subject.other	Thin-walled	en
dc.subject.other	Vehicle body	en
dc.subject.other	Automobile parts and equipment	en
dc.subject.other	Axial loads	en
dc.subject.other	Computer simulation	en
dc.subject.other	Crashworthiness	en
dc.subject.other	Loading	en
dc.subject.other	Metal analysis	en
dc.subject.other	Steel	en
dc.subject.other	Steel metallography	en
dc.subject.other	Thin walled structures	en
dc.subject.other	Tubes (components)	en
dc.subject.other	Tubular steel structures	en
dc.subject.other	Finite element method	en
dc.title	The effect of the implementation of circular holes as crush initiators to the crushing characteristics of mild steel square tubes: Experimental and numerical simulation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/13588260902826547	en
heal.identifier.secondary	http://dx.doi.org/10.1080/13588260902826547	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	During a crash event, significant energy must be absorbed by kinetic energy-dissipating systems through material plastic deformation. Such systems are thin-walled steel tubes installed in specific places of the vehicle body to reduce the amount of forces transferred to occupants to a required safety limit and to minimise the cargo damage. The present paper deals with the improvement of the response characteristics of structural components by embodying geometrical discontinuities in the form of circular holes. These discontinuities play the role of crash initiators, which can affect the axial collapse mode, by ensuring a stable collapse process and decreasing the initial peak load. Results of both experimental and finite element (FE) simulation of square steel tubes with circular discontinuities subjected to quasi-static axial loadings are reported. The tubular test specimens were manufactured from commercially mild steel S355 tubes and were tested under various schemes of discontinuities (hole diameter, location, etc.). The proposed numerical model using the LS-DYNA explicit FE code was validated employing testing results from the axial loading and was found to be in good agreement with the experimental data.	en
heal.publisher	TAYLOR & FRANCIS LTD	en
heal.journalName	International Journal of Crashworthiness	en
dc.identifier.doi	10.1080/13588260902826547	en
dc.identifier.isi	ISI:000270052400010	en
dc.identifier.volume	14	en
dc.identifier.issue	5	en
dc.identifier.spage	489	en
dc.identifier.epage	501	en