A Continuous Damage Mechanics Model for Ductile Fracture

作者：Jean Lemaitre · 发表于：Journal of Engineering Materials and Technology · 年份：1985 · DOI：10.1115/1.3225775 · 被引用次数：2926 · 研究领域：Metal Forming Simulation Techniques、Metallurgy and Material Forming、High-Velocity Impact and Material Behavior

A model of isotropic ductile plastic damage based on a continuum damage variable, on the effective stress concept and on thermodynamics is derived. The damage is linear with equivalent strain and shows a large influence of triaxiality by means of a damage equivalent stress. Identification for several metals is made by means of elasticity modulus change induced by damage. A comparison with the McClintock and Rice-Tracey models and with some experiments is presented for the influence of triaxiality on the strain to rupture.