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Numerical investigation on the behavior of circumferentially butt-welded steel circular hollow section flexural members / Chin-Hyung Lee in Journal of structural engineering, Vol. 137 N° 12 (Décembre 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1395-1404 Titre : Numerical investigation on the behavior of circumferentially butt-welded steel circular hollow section flexural members Type de document : texte imprimé Auteurs : Chin-Hyung Lee, Auteur ; Kyong-Ho Chang, Auteur Année de publication : 2012 Article en page(s) : pp. 1395-1404 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Welding  residual  stresses  Circumferentially  butt-welded  steel  CHS  tube  Three-dimensional  FE  analysis  Bending  Flexural  behavior Résumé : This paper presents a finite element (FE) analysis to quantify the effects of weld-induced residual stresses on the flexural behavior of circumferentially butt-welded steel circular hollow section (CHS) members. FE modeling of the weld-induced residual stresses is first described. Nonlinear FE analysis in which the behavior of the CHS members subjected to bending is explored incorporating the residual stresses is discussed next. Two FE CHS tube models with different failure modes are developed in order to clarify the effects that the residual stresses have on the flexural behavior. Simulated results show that welding residual stresses can have significant effects on the initial stiffness and the ultimate strength of the CHS flexural members depending on the loading position; hence, they should be taken into account in assessing the behavior of steel CHS members with circumferential weld under bending. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i12/p1395_s1?isAuthorized=no [article] Numerical investigation on the behavior of circumferentially butt-welded steel circular hollow section flexural members [texte imprimé] / Chin-Hyung Lee, Auteur ; Kyong-Ho Chang, Auteur . - 2012 . - pp. 1395-1404. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1395-1404 Mots-clés : Welding  residual  stresses  Circumferentially  butt-welded  steel  CHS  tube  Three-dimensional  FE  analysis  Bending  Flexural  behavior Résumé : This paper presents a finite element (FE) analysis to quantify the effects of weld-induced residual stresses on the flexural behavior of circumferentially butt-welded steel circular hollow section (CHS) members. FE modeling of the weld-induced residual stresses is first described. Nonlinear FE analysis in which the behavior of the CHS members subjected to bending is explored incorporating the residual stresses is discussed next. Two FE CHS tube models with different failure modes are developed in order to clarify the effects that the residual stresses have on the flexural behavior. Simulated results show that welding residual stresses can have significant effects on the initial stiffness and the ultimate strength of the CHS flexural members depending on the loading position; hence, they should be taken into account in assessing the behavior of steel CHS members with circumferential weld under bending. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i12/p1395_s1?isAuthorized=no