Buckling of thin-walled structures through a higher order beam model
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- 作者：R.F. Vieira ; ricardo.figueiredo.vieira@tecnico.ulisboa.pt ; F.B.E. Virtuoso ; E.B.R. Pereira
- 关键词：Thin-walled structures ; Higher order beam model ; Higher order effects ; Warping ; Distortion ; Local buckling
- 刊名：Computers & Structures
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：180
- 期：Complete
- 页码：104-116
- 全文大小：1899 K
- 卷排序：180
文摘
A higher order beam model for the buckling analysis of thin-walled structures is presented in this paper.The model considers an enrichment of the displacement field so as to accurately represent the three-dimensional behaviour of thin-walled structures. The definition of an uncoupled set of deformation modes allows a meaningful definition of hierarchical higher order solutions, which are useful for the linear buckling analysis of thin-walled structures. A criterion for the definition of local and global buckling modes, as well as possible interaction between modes is put forward. A comparison between the results obtained with the higher order beam model and results obtained from a shell finite element model implemented in Abaqus allows to conclude not only the efficiency of the beam model but also its simplicity of use.