Effect of higher order constitutive terms on the elastic buckling of thin-walled rods

Autor(es)

Campello, Eduardo M. B. ^[1] ; Lago, Leonardo B. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Polytech Sch, Dept Struct & Geotech Engn, BR-05424970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: THIN-WALLED STRUCTURES; v. 77, p. 8-16, APR 2014.
• Citações Web of Science: 4

Resumo

In this paper we revisit an elastic constitutive equation proposed in two previous works and extend it in order to include all higher-order terms on the deformations. Our purpose is to assess the influence of these terms on the elastic buckling of thin-walled rods. The resulting material model was incorporated into a geometrically exact rod formulation and implemented into a nonlinear finite element code. By means of simple numerical examples we show that the higher order terms may play a significant role on the values of the buckling loads and on the post-buckling behavior of thin-walled beams and columns. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 12/04009-0 - Formulações multiescalas para a modelagem computacional de membranas
• Beneficiário: Eduardo de Morais Barreto Campello
• Modalidade de apoio: Bolsas no Exterior - Pesquisa