Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28070
Title: Direct analysis for high-strength steel frames with explicit-model of residual stresses
Authors: Li, TJ
Liu, SW
Chan, SL 
Keywords: Direct analysis
Frames
High-strength steel
Residual stresses
Second-order and nonlinear analysis
Issue Date: 2015
Publisher: Pergamon Press
Source: Engineering structures, 2015, v. 100, p. 342-355 How to cite?
Journal: Engineering structures 
Abstract: This paper proposes a direct analysis method (DAM) for design of high-strength steel members and frames allowing explicit modeling of residual stresses. A section analysis technique, based on quasi-Newton iterative scheme, is employed taking into account for the effects of residual stress. Two distributed patterns of residual stress for the welded box-sections and H-sections fabricated by high-strength steel are discussed. To consider second-order effects associated with initial imperfections and the highly inelastic behavior along the member length, the curved arbitrarily-located-hinge (ALH) element is introduced. A plastic fiber hinge model using the sectional strength-iteration surfaces is proposed for modeling of material yielding. Finally, several examples are given for verifying the accuracy and validity of the proposed method. The distinct feature of this paper is about the development of a versatile numerical procedure accounting for residual stress and geometric imperfections separately and independently for stability design of high-strength steel members.
URI: http://hdl.handle.net/10397/28070
ISSN: 0141-0296
EISSN: 1873-7323
DOI: 10.1016/j.engstruct.2015.06.008
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