5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


EFFECTS OF COLD-FORMING PROCESS ON THE PROPERTIES OF G450 COLD-FORMED STEEL CHANNELS

 

Huu Nam TRINH1, Gwénaëlle PROUST1, Cao Hung PHAM1
and Gregory J. HANCOCK1

 1 School of Civil Engineering, The University of Sydney, Sydney, Australia

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DOI:10.18057/ICASS2018.P.125

ABSTRACT:

Cold-formed steel members are manufactured from cold-reduced steel sheets by either press-braking or cold-forming and have become widely popular over the past decade due to their high strength to weight ratio and ease of installation. The growing use of such components has led to the necessity of understanding the effects of the cold-forming process on cold-formed steel members. During the manufacturing process at ambient temperature, two steps that create a high amount of deformation on the cold-formed steel sections are the cold-reducing and cold-forming processes. The latter plastic deformation associated with rolling and bending processes results in strain hardening of the material and subsequently affecting the local mechanical properties. This paper presents experimental investigations on the microstructure and residual stresses of the flat and corner regions of C-shaped cold-formed sections with four different thicknesses (1.5mm, 1.9mm, 2.4mm and 3.0mm). Scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) were used for microstructure analysis. The residual stresses at different positions around cross-sections were measured using the sectioning method. Understanding the relationship between mechanical properties and changes in the microstructure of the material will provide insight on the mechanical behaviour of these members.

Keywords:

Cold-formed steel; Microstructure; Residual stress; Corner properties; EBSD

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IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM