An accurate prediction of the fracture strain under different stress states is essential for designing metal formed structures. General stress states may be characterized by two independent parameters; the stress triaxiality ratio and the Lode angle. When both parameters remain constant throughout the strain history, the loading is said to be proportional. In this work, the mechanical and damage behavior of ductile metal was captured using an anisotropic time-dependent continuum damage model coupled plasticity. The model was implemented in a finite element simulation code using an implicit time integration scheme. A hybrid method combining experimental (proportional loading) and finite element simulations was used for the model calibration. The predictive capability of the model with embedded cumulative damage law was validated on proportional loading tests conducted on a 6xxx series aluminum alloy sheets.