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FIRSTORDER THEORY FOR BENDING
resultants expressed as functions of the displace
8 other sections not shown
analysis assumed axes axial load axial stress axis beam behaviour bimoment boundary conditions box column box girder buckling modes buckling stress calculated cell centroid Chapter closed profiles compression compressive stress cosh critical load critical stress cross-section curve deflection derived displacement edge effective width elastic element equilibrium Euler evaluated example factor failure load finite difference finite difference method finite strip method flange formula governing equations graphs Hence illustrated in Fig initial imperfections interaction isolated plates Merrison rules 1973 obtained open profiles plane plastic hinges plastic mechanism plate panel post-buckling problem ratio residual stresses rotation Runge-Kutta method Saint Venant torsion section properties seen shear centre shear flow shear strain shear stress shown in Fig simply supported sinh solution solved stiffened plates stiffness equation stress distribution strut theory thin-walled structures torque transverse stiffeners twisting warping function warping stresses welding yield stress zero