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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 106
Edited by:
Paper 153

A Nonlinear Model for the Analysis of Composite Beams including Warping Effects

A. Genoese, A. Genoese, A. Bilotta and G. Garcea

Dipartimento di Informatica, Modellistica, Elettronica e Sistemistica, University of Calabria, Italy

Full Bibliographic Reference for this paper
A. Genoese, A. Genoese, A. Bilotta, G. Garcea, "A Nonlinear Model for the Analysis of Composite Beams including Warping Effects", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 153, 2014. doi:10.4203/ccp.106.153
Keywords: nonuniform warping, composite beams, geometrically exact beams, buckling analysis..

A geometrically nonlinear beam model suitable to describe complex three-dimensional effects arising from non-uniform warping including non-standard in-plane distortions of the cross-section or from the anisotropy and heterogeneity of the material is presented. Each section is endowed with a corotational frame where statics and kinematics are described using a refined linear elastic model which exploits a semi-analytical solution of the Cauchy continuum problem based on a finite element discretization of the cross-section. The stress field in this way is fully three-dimensional, permitting the recovery of the standard Saint Venant solution or its generalization to inhomogeneous and anisotropic materials, while some additional relevant strain modes of the crosssection are evaluated in a simple way. Buckling analysis results are presented and compared with reference solutions obtained using the commercial code ABAQUS.

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