This paper presents a continuous damage mechanics model for ductile fracture, focusing on isotropic ductile plastic damage. The model is based on a continuum damage variable, effective stress, and thermodynamics. The damage variable is linear with equivalent strain and is influenced by triaxiality through a damage equivalent stress. The model is identified using changes in the elasticity modulus induced by damage. The paper compares the model with the McClintock and Rice-Tracey models and experimental data to assess the influence of triaxiality on strain to rupture. The model's validity is limited by the assumptions of isotropy and constant triaxiality ratio during loading, but it is effective for predicting damage and ductile fracture in metal forming applications. The model's key features include the linearity of damage with strain and the significant impact of triaxiality, which is validated through comparisons with experimental results.This paper presents a continuous damage mechanics model for ductile fracture, focusing on isotropic ductile plastic damage. The model is based on a continuum damage variable, effective stress, and thermodynamics. The damage variable is linear with equivalent strain and is influenced by triaxiality through a damage equivalent stress. The model is identified using changes in the elasticity modulus induced by damage. The paper compares the model with the McClintock and Rice-Tracey models and experimental data to assess the influence of triaxiality on strain to rupture. The model's validity is limited by the assumptions of isotropy and constant triaxiality ratio during loading, but it is effective for predicting damage and ductile fracture in metal forming applications. The model's key features include the linearity of damage with strain and the significant impact of triaxiality, which is validated through comparisons with experimental results.