INFLUENCE OF RESIDUAL STRESSES BY WELDING ON LATERAL-TORSIONAL BUCKLING OF TUBULAR TRUSS BEAM-COLUMNS

The effect of discrete lateral and torsional bracings stiffness on the elastic lateral-torsional buckling of mono-symmetric I beam, under the concentrated moment

When the out-of-plane stiffness of a beam is remarkably lower than the in-plane stiffness, the lateral-torsional buckling occurs. In this study, the behavior of mono-symmetric I-beams with discrete torsional and lateral bracings under the concentrated moment is investigated using the finite element analyses. Then, based on the numerical analyses, equation for the stiffness requirement is propos...

Numerical modelling and experimental investigation on welding residual stresses in largescale tubular Kjoints

Influence of Friction Stir Welding residual stresses on the mechanical behaviour of aluminium stiffened panels

In this work, the longitudinal residual stresses that arise from FSW processes were measured by means of the Contour Method. These residual stresses were then introduced into a numerical simulation model based on the Finite Element Method (FEM), and their effect on the buckling collapse load of aluminium stiffened panels was assessed. The sensitivity of the models to initial geometrical imperfe...

Residual Stresses in Friction Stir Welding

Friction stir welding is an innovative joining process being developed for use in aerospace manufacturing. Like most welding processes there exist problems with post-weld residual stresses and subsequent geometrical distortion. The residual stress-state of a welded component can be modified using suitably applied mechanical tensioning and thus distortion can be reduced or eliminated. In the pre...

Influence of Bending-extension Coupling on Buckling of Composite Columns

Stability aMlysis 0/ lambuUed composite columns with bending-mension coupling is pr~. sented. PnVioIU work by other authors considered tluzt the stability 0/ th~ colum" is govemedby a symmetric bifurcation andusedG " redueed bending stil/ness. " A p~rturbation tUUJlysLt is employed in this work to investigau 1M primary equilibrium path using linear, fUtUlratie, and cubk tlpproxinUltions. Equili...