Research on the 2A11 Aluminum Alloy Sheet Cyclic Tension–Compression Test and Its Application in a Mixed Hardening Model

The increasing application of aluminum alloy, in combination with the growth complexity components, provides new challenges for numerical modeling sheet materials. material elastic–plasticity constitutive model is most important factor affecting accuracy finite element simulation. mixed hardening can more accurately represent real characteristics plastic deformation process, and property-related parameters directly affects Based on Hill48 anisotropic yield criterion, combined Voce isotropic Armstrong–Frederic nonlinear kinematic model, a that considers anisotropy Bauschinger effect was established. Analysis tension–compression experiment using method. Using optimum geometry sample determined. cyclic stress–strain curve 2A11 alloy obtained by tensile–compression test, characteristic were reliability established materials verified simulation testing problem, springback bending, unloading, reverse bending problems. an effective method to obtain