Strength enhancements induced during cold forming of stainless steel sections

被引:151
作者
Cruise, Rachel B. [1 ]
Gardner, Leroy [2 ]
机构
[1] Univ Bath, Dept Architecture & Civil Engn, Bath BA2 7AY, Avon, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Civil & Environm Engn, London SW7 2AZ, England
基金
英国工程与自然科学研究理事会;
关键词
stainless steel; cold-formed sections; strain hardening; residual stresses; strength enhancement;
D O I
10.1016/j.jcsr.2008.04.014
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The material properties of stainless steel are sensitive to plastic deformation which causes an increase in yield strength by a process termed cold working. The different strain paths experienced around cold-formed cross sections during manufacture create unique material strength distributions for sections from different forming routes and also influence residual stress patterns. The research program presented herein has examined experimentally the material and residual stress distributions found in two types of cold-formed sections-cold-rolled box sections and press-braked angles. Predictive tools to harness the observed strength enhancements have been proposed and incorporated into models. Subsequent comparisons have shown that these strength enhancements, in particular those observed for cold-rolled box sections, should be employed in structural design to avoid considerable underestimation of member resistance. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1310 / 1316
页数:7
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