The Structural Engineer > Archive > Volume 41 (1963) > Issues > Issue 7 > The plastic behaviour of mild steel beams of rectangular section bent about both principal axes
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The plastic behaviour of mild steel beams of rectangular section bent about both principal axes

The behaviour at collapse of mild steel beams of rectangular section is examined for the case of transverse loading applied in the planes of both major and minor axes. The usual criteria for the plastic failure of a two-dimensional flexural structure are applied to these problems. The yield criterion will be found to involve the development of the full plastic moment about axes other than the principal axes and the mechanism condition requires the formation of two, three or four bar linkages, the kinematics of which have to be taken into account. Solutions determining the collapse loads are obtained and tests are described which enable a comparison of predicted and observed collapse loads to be made. H.B. Harrison

Author(s): Harrison, H B

Keywords: rectangular;beams;steel;behaviour;deflection