Tangent moduli of hot-rolled I-shaped axial members considering various residual stress distributions SCIE SCOPUS

Cited 4 time in WEB OF SCIENCE Cited 4 time in Scopus
Title
Tangent moduli of hot-rolled I-shaped axial members considering various residual stress distributions
Author(s)
Kim, Seungjun; Han, Taek Hee; Won, Deok Hee; Kang, Young Jong
KIOST Author(s)
Han, Taek Hee(한택희)Won, Deokhee(원덕희)
Publication Year
2014-03
Abstract
This paper presents an equation for the effective tangent moduli for steel axial members of hot-rolled l-shaped section subjected to various residual stress distributions. Because of the existence of residual stresses, the cross section yields gradually even when the member is subjected to uniform axial stresses. In the elasto-plastic stage, the structural response can be easily traced using rational tangent modulus of the member. In this study, the equations for rational tangent moduli for hot-rolled l-shaped steel members in the elasto-plastic stage were derived based on the general principle of force-equilibrium. For practical purpose, the equations for the tangent modulus were presented for conventional patterns of the residual stress distribution of hot-rolled I-shaped steel members. Through a series of material nonlinear analyses for steel axial members modeled by shell elements, the derived equations were numerically verified, and the presented equations were compared with the CRC tangent modulus equation, the most frequently used equation so far. The comparative study shows that the presented equations are extremely effective for accurately analyzing elasto-plastic behavior of the axially loaded members in a simple manner without using complex shell element models. (C) 2013 Elsevier Ltd. All rights reserved.
ISSN
0263-8231
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2900
DOI
10.1016/j.tws.2013.11.005
Bibliographic Citation
THIN-WALLED STRUCTURES, v.76, pp.77 - 91, 2014
Publisher
ELSEVIER SCI LTD
Subject
PLASTIC-HINGE ANALYSIS; FRAME DESIGN
Keywords
Residual stress; Tangent modulus; Hot-rolled section; Plastic hinge method; Inelastic analysis
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCI LTD
Related Researcher
Research Interests

Structural Engineering,Composite Structure,Marine Energy,구조공학,합성구조,해양에너지

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