GBT post-buckling analysis based on the Implicit Corotational Method

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:163

Article

Ruggerini, A. W.¹  Madeo, A.²  Goncalves, R.^3,4  Camotim, D.⁵  Ubertini, F.¹  de Miranda, S.¹ 

[1] Univ Bologna, DICAM, Bologna, Italy

[2] Univ Calabria, DIMES, Calabria, Italy

[3] Univ Nova Lisboa, ICIST, CERIS, Lisbon, Portugal

[4] Univ Nova Lisboa, Dept Engn Civil, Lisbon, Portugal

[5] Univ Lisbon, Inst Super Tecn, DECivil, CERIS,ICIST, Lisbon, Portugal

关键词: Generalized Beam Theory (GBT);    Geometrical nonlinearity;    Corotational kinematics;    Path-following;    Cross-section deformation;   

DOI  :  10.1016/j.ijsolstr.2018.12.011

来源: Elsevier

【 摘 要 】

In this work, the post-buckling analysis of thin-walled beams by using the Generalized Beam Theory (GBT) is presented. To this purpose, a geometrically nonlinear GBT finite element is developed by exploiting the features of mixed-stress GBT finite element formulation in the framework of the Implicit Corotational Method (ICM). The application of the ICM to GBT is briefly discussed and the details necessary to successfully transform the linear GBT finite element in its nonlinear counterpart are illustrated. The numerical results show how the proposed finite element can deal with global and distortional geometrically nonlinear phenomena, in good accordance with respect to 3D shell models. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free