Efficient local formulation for elasto-plastic corotational thin-walled beams

被引：6

作者：

Alsafadie, Rabe ^{[1
]}

Battini, Jean-Marc ^{[2
]}

Hjiaj, Mohammed ^{[1
]}

机构：

[1] INSA Rennes, Struct Engn Res Grp LGCGM, F-35043 Rennes, France

[2] Royal Inst Technol, KTH, Dept Civil & Architectural Engn, SE-10044 Stockholm, Sweden

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING | 2011年 / 27卷 / 04期

关键词：

nonlinear analysis; corotational formulation; beam element; arbitrary cross-section; elastoplasticity; ELEMENT; INSTABILITY; TORSION;

D O I：

10.1002/cnm.1311

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A local elasto-plastic formulation, based on a low-order nonlinear strain expression using Bernoulli beam kinematics, is presented in this paper. This element, together with the corotational framework proposed in (Comput. Meth. Appl. Mech. Eng. 2002; 191(17): 1755-1789) can be used to analyze the nonlinear buckling and postbuckling of thin-walled beams with arbitrary cross-section. The formulation captures both the Saint-Venant and warping torsional effects of open cross-sections. Numerical examples show that this local formulation is more efficient than the one proposed in (Comput. Meth. Appl. Mech. Eng. 2002; 191(51):5811-5831) based on a Timoshenko beam assumption. Copyright (C) 2009 John Wiley & Sons, Ltd.

引用

页码：498 / 509

页数：12

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