Prediction of elastic-plastic generalised force- displacement responses of tubular joints for three different loading modes

摘要

In this paper the method of complementary energy is employed to predict the elastic-plastic force-displacement and moment-rotation response of the T-and Y-brace ends of a simply- supported tubular YT-joint, for arbitrary radial load paths (i.e. proportional loads, no unloading) in the load space of the structure. The prediction procedure is applied to three combined loading modes, as follows: i) combined T-and Y-brace axial force loading mode, ii) combined T-and Y-brace in-plane bending moment loading mode, and iii) combined T-brace in-plane Bending moment and Y-brace axial force loading mode.