Abstract: The tensile properties and stress-strain curves of 6N01 aluminum alloy plate with medium thickness after T5 heat treatment were obtained by the tensile experiments. On this basis the three-point bending deformation behavior of these plates was simulated with the dynamics analysis software ANSYS-LSDYNA and verified by the experiments. The results show that the tensile properties of the aluminum alloy plates with various thicknesses were different and the correlations between tensile properties and thicknesses were not strong. The stress triaxialities at different node positions changed very little during three-point bending. The limit bending angles by simulation were between 150°and 154°, which were consistent with the experimental results. The selected material model and failure strain criterion obtained on the basis of stress triaxialities can simulate the bending behavior of the aluminum alloy plate with medium thickness.