CYCLIC BENDING TESTS OF THIN-WALLED BOX BEAMS.

Abstract

This paper presents a study on the deformation behavior of thin-walled welded box beams under cyclic bending. The specimens are tested under two-point load bending to have a uniform moment occur in the central segment of the beam. Two different simple models are introduced to predict analytically the cyclic moment-curvature curves of the beams. The numerically obtained stress versus strain curves of plate elements are utilized to calculate the moment-curvature curves.