Investigation of Global Buckling Distortion in Welding of a Thin Wall Aluminium T Joint
In this paper global welding buckling distortion of a thin wall aluminum T joint is investigated. A thermo-elastoplastic model is employed to determine longitudinal residual stresses; analysis of thermal model and elastic-viscoplastic (Anand) model are decoupled. Molten puddle motion (speed of welding) is modeled by using birth and death element method and time dependent model. Three dimensional nonlinear-transient heat flow analysis has been used to obtain temperature distribution, and then by applying thermal results and using three dimensional Anand elastic-viscoplastic model, stress and deformation distributions are obtained. By applying residual stresses on a structural model and using eigenvalue methods, global buckling instability of the welded structure is determined. Some experiments are done for validating the numerical results.
W.J. Poole, M.A. Wells and D.J. Lloyd
M. A. Zaeem et al., "Investigation of Global Buckling Distortion in Welding of a Thin Wall Aluminium T Joint", Materials Science Forum, Vols. 519-521, pp. 1187-1192, 2006