Performance of CUF approach to analyze the structural behavior of slender bodies / Erasmo Carrera in Journal of structural engineering, Vol. 138 N° 2 (Fevrier 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 2 (Fevrier 2012) . - pp. 285-297 Titre : Performance of CUF approach to analyze the structural behavior of slender bodies Type de document : texte imprimé Auteurs : Erasmo Carrera, Auteur ; Marco Petrolo, Auteur ; Enrico Zappino, Auteur Année de publication : 2012 Article en page(s) : pp. 285-297 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Beams Finite-element method Higher-order theories Static analysis End effects Résumé : This paper deals with the accurate evaluation of complete three-dimensional (3D) stress fields in beam structures with compact and bridge-like sections. A refined beam finite-element (FE) formulation is employed, which permits any-order expansions for the three displacement components over the section domain by means of the Carrera Unified Formulation (CUF). Classical (Euler-Bernoulli and Timoshenko) beam theories are considered as particular cases. Comparisons with 3D solid FE analyses are provided. End effects caused by the boundary conditions are investigated. Bending and torsional loadings are considered. The proposed formulation has shown its capability of leading to quasi-3D stress fields over the beam domain. Higher-order beam theories are necessary for the case of bridge-like sections. Various theories are also compared in terms of shear correction factors on the basis of definitions found in the open literature. It has been confirmed that different theories could lead to very different values of shear correction factors, the accuracy of which is subordinate to a great extent to the section geometries and loading conditions. However, an accurate evaluation of shear correction factors is obtained by means of the present higher-order theories. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v138/i2/p285_s1?isAuthorized=no [article] Performance of CUF approach to analyze the structural behavior of slender bodies [texte imprimé] / Erasmo Carrera, Auteur ; Marco Petrolo, Auteur ; Enrico Zappino, Auteur . - 2012 . - pp. 285-297. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 2 (Fevrier 2012) . - pp. 285-297 Mots-clés : Beams Finite-element method Higher-order theories Static analysis End effects Résumé : This paper deals with the accurate evaluation of complete three-dimensional (3D) stress fields in beam structures with compact and bridge-like sections. A refined beam finite-element (FE) formulation is employed, which permits any-order expansions for the three displacement components over the section domain by means of the Carrera Unified Formulation (CUF). Classical (Euler-Bernoulli and Timoshenko) beam theories are considered as particular cases. Comparisons with 3D solid FE analyses are provided. End effects caused by the boundary conditions are investigated. Bending and torsional loadings are considered. The proposed formulation has shown its capability of leading to quasi-3D stress fields over the beam domain. Higher-order beam theories are necessary for the case of bridge-like sections. Various theories are also compared in terms of shear correction factors on the basis of definitions found in the open literature. It has been confirmed that different theories could lead to very different values of shear correction factors, the accuracy of which is subordinate to a great extent to the section geometries and loading conditions. However, an accurate evaluation of shear correction factors is obtained by means of the present higher-order theories. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v138/i2/p285_s1?isAuthorized=no

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