Numerical simulation on bucking distortion of aluminum alloy thin-plate weldment

Abstract

In this paper, the welding residual distortion of aluminum alloy thin plates is predicted using the elasticity-plasticity finite element method (FEM). The factors contributing to the welding buckling distortion of thin plates are studied by investigating the formation and evolution process of welding stresses. Results of experiments and numerical simulations show that the buckling appearance of thin-plate aluminum alloy weldments is asymmetrical in the welding length direction, and the maximum longitudinal deflection appears at the position a certain distance from the middle point of the side edge towards the arc-startingexists end. The angular deformation direction of thin-plate weldments is not fixed, and the angular deformation value of the arc-starting end is being higher than that of the arc-blowout end.

Keywords

aluminum alloy / thin plate / welding / buckling distortion / numerical simulation

References

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg