Computational & Technology Resources
an online resource for computational,
engineering & technology publications
Civil-Comp Proceedings
ISSN 1759-3433
CCP: 106
Edited by:
Paper 158

Analysis of Local and Global Buckling of Thin-Walled Structures using a Higher Order Beam Model

R.F. Vieira, F.B. Virtuoso and E.B.R. Pereira

Department of Civil Engineering, Architecture and Georesources, Instituto Superior Técnico, Universidade de Lisboa, Portugal

Full Bibliographic Reference for this paper
R.F. Vieira, F.B. Virtuoso, E.B.R. Pereira, "Analysis of Local and Global Buckling of Thin-Walled Structures using a Higher Order Beam Model", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 158, 2014. doi:10.4203/ccp.106.158
Keywords: beam theory, higher order effects, warping, distortion, local buckling..

A higher order beam model that considers the cross-section warping together with the in-plane flexural deformation 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 is a key feature of the model, enabling classic solutions to be retrieved (without establishing any ab-initio conditions) and to capture meaningful hierarchical higher order solutions. Toward this end, the model relies on a set of deformation modes derived with a non-linear eigenvalue problem associated with the model differential equations. A linear buckling analysis of thin-walled structures through the higher order beam model allowing local and global buckling modes to be defined is presented. A consistent criterion of uncoupling modes is verified to be an adequate model for carrying the buckling analysis of prismatic thin-walled structures with an arbitrary cross section geometry. A comparison between the results obtained with the higher order beam model and the results obtained from a shell finite element model, implemented in Abaqus, allows to concluded not only the efficiency of the beam model, but also its simplicity of use.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £65 +P&P)