Buckling of thin-walled long steel cylinders under bending
Data
2010Soggetto
Abstract
The present paper investigates structural response and buckling of long unstiffened thin-walled cylindrical steel shells, subjected to bending moments, with particular emphasis on their stability design. The cylinder response is characterized by cross-sectional ovalization, followed by buckling (bifurcation instability), which occurs on the compression side of the cylinder wall. Using a nonlinear finite element technique the bifurcation moment is calculated, the post-buckling response is determined, and imperfection sensitivity with respect to the governing buckling mode is examined. The results show that the buckling moment capacity is affected by cross-sectional ovalization. It is also shown that buckling of bent elastic long cylinders can be described quite accurately through a simple analytical model, which considers the ovalized pre-buckling configuration and results in closed-form expressions. Using this analytical solution, the incorporation of the ovalization effects in the design of thin-walled cylinders under bending is discussed, in the framework of the provisions of the new European Standard EN1993-1-6. Copyright © 2009 by ASME.
Collections
Related items
Showing items related by title, author, creator and subject.
-
TRANSIENT LAMINAR MHD NATURAL CONVECTION COOLING IN A VERTICAL CYLINDER
Iatridis, A. J.; Dritselis, C. D.; Sarris, I. E.; Vlachos, N. S. (2012)A numerical study is presented of transient laminar natural convection cooling of an electrically conductive fluid, placed in a vertical cylinder in the presence of an axial magnetic field. The cylindrical wall is suddenly ... -
Stability of confined thin-walled steel cylinders under external pressure
Vasilikis, D.; Karamanos, S. A. (2009)The present paper investigates the structural stability of thin-walled steel cylinders surrounded by an elastic medium, subjected to uniform external pressure. A two-dimensional model is developed, assuming no variation ... -
A novel tool for segmenting 3D medical images based on generalized cylinders and active surfaces
Delibasis, K. K.; Kechriniotis, A.; Maglogiannis, I. (2013)Three-dimensional (3D) medical imaging has been incorporated in routine clinical practice, since the required infrastructure has become increasingly affordable. New algorithms and applications are needed to serve the ...