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PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY
Edited by: B.H.V. Topping and P. Iványi
Thermal Buckling Analysis of Thin-Walled Beam Structures
I. Pešic, D. Lanc and G. Turkalj
Department of Engineering Mechanics, Faculty of Engineering, University of Rijeka, Croatia
I. PeĀšic, D. Lanc, G. Turkalj, "Thermal Buckling Analysis of Thin-Walled Beam Structures", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 254, 2014. doi:10.4203/ccp.106.254
Keywords: thermal buckling, stability, thin-walled beams, nonlinearity, finite elements, temperature..
This paper presents an algorithm for thermal buckling analysis of thin-walled beamtype structures. A one-dimensional finite element is employed subject to the assumptions of large displacements, large rotational effects but small strains. The geometric stiffness matrix of the thin-walled beam finite element is derived. Stability analysis is performed in a load deflection manner using the co-rotational formulation. The cross- section mid-line contour is assumed to remain undeformed in its own plane and the shear strains of the middle surface are neglected. The analysis is restricted to constant material properties. The results are validated on test examples.
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