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

被引：12

作者：

Campello, Eduardo M. B. ^{[1
]}

Lago, Leonardo B. ^{[1
]}

机构：

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

来源：

THIN-WALLED STRUCTURES | 2014年 / 77卷

基金：

巴西圣保罗研究基金会;

关键词：

Thin-walled rods; Elastic constitutive equations; Geometrically exact rod theories; Warping; Buckling; Finite element methods; PART; 1; BEAM; ELEMENT; FORMULATION; MODEL; DEFORMATION; DYNAMICS;

D O I：

10.1016/j.tws.2013.11.001

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页码：8 / 16

页数：9

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