Abstract
The ultimate strength of aluminum alloy plates in in-plane shear is investigated by the elastic-plastic large deflection analysis with FEM. The aluminum alloys taken into account are heat-treated alloys A6061-T6 and A6005C-T5 and non-heat-treated alloy A5083-O. The residual stresses and initial deflection caused by joining and the strength-reduction at joints in heat-treated 6000 alloys are considered in the analysis. It is shown that the upper limit of the ultimate strength of rectangular plates with joints of heat-treated 6000 alloys is the 0.2 % shear proof stress of the joints. Based on the results of the analysis, the ultimate strength curves are provided for rectangular plates in in-plane shear.
