The Open Civil Engineering Journal




ISSN: 1874-1495 ― Volume 13, 2019
RESEARCH ARTICLE

Cold Rolling Effects on Material Properties in Pallet Rack Uprights



Andrei Crisan, Adrian Ioan Dogariu*
Steel Structures and Structural Mechanics Department, Politehnica University of Timisoara, Timisoara, Romania

Abstract

Pallet rack structures are usually made up of thin walled cold formed steel sections. The cold rolling process changes the material properties, increasing the yield strength and tensile strength across the section. According to EN1993-1-3, an equivalent yielding strength is allowed to be considered in design to account for the changes in material properties. It has to be mentioned that this approach does not take into account the residual stresses that arise following the forming process. The current paper presents the experimental evidence of residual stresses as result cold rolling process for two pallet rack upright sections. Based on experimental findings, a series of numerical models were created in order investigate the influence of residual stresses onto the load bearing capacity of pallet rack uprights. The experimental program was developed within the CEMSIG Research Centre (http://cemsig.ct.upt.ro) of “Politehnica” University of Timisoara. The increase of yield strength and tensile strength across the cross-section was also experimentally determined.

Keywords: Pallet rack upright, Cold-forming, Yield strength, Tensile strength, Residual stress.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 11
Issue: Suppl-1, M2
First Page: 319
Last Page: 331
Publisher Id: TOCIEJ-11-319
DOI: 10.2174/1874149501711010319

Article History:

Received Date: 17/11/2015
Revision Received Date: 02/5/2016
Acceptance Date: 23/6/2016
Electronic publication date: 30/06/2017
Collection year: 2017

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© 2017 Crisan and Dogariu

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Steel Structures and Structural Mechanics Department, Politehnica University of Timisoara, str. Ioan Curea 1, 300224 Timisoara, Romania; Tel: +40 (0) 256 403 922; Fax: +40 (0) 256 403 917; E-mails: adrian.dogariu@upt.ro, dogariuadrian @gmail.com


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