Abstract
This chapter analyzes the influence of welding on the buckling behavior of slender aluminum plates. Even if it is leading to a conservative evaluation of plate strength for high values of slenderness in case of welded elements, nowadays, the codified approach appears adequate in predicting the collapse load of welded elements for both HT and NHT alloys. On the other side, numerical results have confirmed the important influence of welding on the slender plate strength, as it has been emphasized experimentally. Nevertheless, they clearly show a reduction of such an effect with the increasing of the plate slenderness as well as the dependence on the hardening features of the alloy. In order to better interpret the variation of welding influence with the hardening features of the material as well as the plate slenderness, further analyses should be performed. Therefore, a more exhaustive parametric study should be undertaken, aiming to verify the reduction of welded aluminum plates with reference to a number of slender sections, by varying residual stress distribution as well as the characterization of heat affected zones.
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