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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Buckling and Vibration Analysis of Cold-Formed Steel CHS Members and Frames Using Generalized Beam Theory

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Autor(es):
Basaglia, Cilmar [1] ; Camotim, Dinar [2] ; Silvestre, Nuno [3]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Civil Engn Architecture & Urban Design, BR-13083852 Campinas, SP - Brazil
[2] Univ Lisbon, Inst Super Tecn, DECivil, CEris, ICIST, P-1049001 Lisbon - Portugal
[3] Univ Lisbon, Inst Super Tecn, DEM, LAETA, IDMEC, P-1049001 Lisbon - Portugal
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS; v. 15, n. 8 DEC 2015.
Citações Web of Science: 1
Resumo

This paper reports the results of an investigation on the use of Generalized Beam Theory (GBT) to assess the buckling and vibration behaviors of thin-walled members and frames built from cold-formed steel circular hollow section (CHS) profiles. Initially, the concepts and procedures involved in performing GBT buckling and vibration analyses are presented, paying particular attention to the derivation of the mass tensors that account for the influence of the inertia forces. Then, the formulation, numerical implementation and validation of a GBT-based beam finite element for isolated members are described. Next, the determination of the frame linear stiffness, geometric stiffness and mass matrices, which incorporate the influence of the frame joints, is addressed. Finally, in order to illustrate the application and capabilities of the proposed GBT finite element formulation, numerical results are presented and discussed - they concern the buckling and vibration behaviors of an ``L-shaped{''} frame. For validation purposes, most GBT-based results are compared with values yielded by shell finite element analyses carried out in the code ANSYS. (AU)

Processo FAPESP: 11/15731-5 - Desenvolvimento e disponibilização de softwares de simulação em mecânica computacional: consolidação do laboratório de informática e mecânica computacional LIMC - Wilson Sérgio Venturini
Beneficiário:Humberto Breves Coda
Linha de fomento: Auxílio à Pesquisa - Temático