Material modeling and simulation of continuous-bending-under-tension of AA6022-T4

In earlier contributions, we discussed continuous-bending-under-tension (CBT) experiments on AA6022-T4. We found that CBT significantly enhanced the elongation-to-fracture and strength, over uniaxial tension. present paper, our understanding of is expanded beyond these experimental observations, with aid material modeling numerical simulations process. Cyclic tension-compression were performed this material, using strain histories are expected to replicate loading during CBT, i.e., different combinations constant amplitude linearly increasing mean value, failure. During experiments, a limited but not negligible amount kinematic hardening was discovered. Some used for calibration combined isotropic-kinematic model, while rest validation model. The framework based rate-independent, associated flow rule von Mises yield criterion as plastic potential. Isotropic introduced by simple, exponential-decay model growth surface deformation. Non-linear 4-term, Chaboche-type large curve identified extrapolation, an approach validated later in work contrasted alternative options. This finite element models meshed linear, reduced-integration elements, 7 elements through thickness. It reproduces force-displacement curve, including succession spikes plateaus typical very closely. also replicates development compares well post-test measurements. After validations, probe mechanics process, e.g., stress thickness per cycle, location onset failure, failure angle, which differs from localized neck angle tension experiment.