Proc.Int.Conf.on Carrying Capacity of Steel Shell Structures (Eds. V.Krupka, P.Schneider), pp. 64-70, 1997
M. Seitzberger, S. Wintschnig and F.G. Rammerstorfer
This study deals with analytical and computational
as well as experimental investigations of the progressive buckling of axially
loaded circular and square tubular steel specimens.
Different analytical models, based on kinematic methods of plasticity,
are compared against each other and against finite element
calculations as well as against experimental results, which were
performed under different relatively slow compression speeds.
It is shown that the
compression speed has - even under quasi-static loading conditions - some
influence on the load-displacement behaviour and on the buckling
Regarding the structural effectiveness of such tubular members as energy
absorbers the different cross-sectional
shapes are compared against each other, too.
Furthermore, some modifications are proposed, which are expected to deliver
improvements of existing analytical and numerical procedures.