The Structural Engineer > Archive > Volume 72 (1994) > Issues > Issue 16 > Inelastic Local Buckling Behaviour of Thin Steel Plates in Profiled Composite Beams
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Inelastic Local Buckling Behaviour of Thin Steel Plates in Profiled Composite Beams

The inelastic local buckling behaviour of cold-formed profiled steel sheets in the compression zone of a profiled composite beam is studied herein. The method considers a profiled composite beam in bending using a modflcation of the semi-analytical inelastic finite strip method. An inelastic constitutive relationship for cold-formed steel is used in the formulation of the clamped strip stiffness and stability matrices. A computer program incorporating material non-linearity has been developed that produces a new form of eigenvalue problem. A parametric study is undertaken for variables that influence the local buckling behaviour. Slenderness limits are derived that can be used for the rigid plastic design of cold-formed steel sheeting in profiled composite beams. B. Uy and Professor M.A. Bradford

Author(s): Uy, B;Bradford, M A

Keywords: buckling;thin;plates;steel;composite construction;beams;profiled sheeting;cold forged;finite strip methods;analysis