Using a direct one dimensional beam model with an internal structure including a kinematical descriptor which accounts for gross warping, the analysis of an L frame made up of thin walled beams is performed up to the initial postbuckling range. The beams have cross sections with only one axis of symmetry but the frame is symmetric and symmetrically loaded. Numerical results have been obtained by means of the finite element method using the COMSOL Multiphysics software. The results show that, despite the geometric and dynamic symmetry of the frame and depending on the transmission of warping between the beams, the frame can be imperfection sensitive.
Rizzi, N.L., Varano, V. (2011). On the Postbuckling Analysis of Thin-Walled Frames. In Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing. STIRLINGSHIRE : Civil-Comp Press.
On the Postbuckling Analysis of Thin-Walled Frames
RIZZI, Nicola Luigi;Varano V.
2011-01-01
Abstract
Using a direct one dimensional beam model with an internal structure including a kinematical descriptor which accounts for gross warping, the analysis of an L frame made up of thin walled beams is performed up to the initial postbuckling range. The beams have cross sections with only one axis of symmetry but the frame is symmetric and symmetrically loaded. Numerical results have been obtained by means of the finite element method using the COMSOL Multiphysics software. The results show that, despite the geometric and dynamic symmetry of the frame and depending on the transmission of warping between the beams, the frame can be imperfection sensitive.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
