A Continuous Damage Mechanics Model for Ductile Fracture | Zendy

Jean Lemaitre | Zendy

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A Continuous Damage Mechanics Model for Ductile Fracture

Author(s) -

Jean Lemaitre

Publication year - 1985

Publication title -

journal of engineering materials and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.368

H-Index - 68

eISSN - 1528-8889

pISSN - 0094-4289

DOI - 10.1115/1.3225775

Subject(s) - isotropy , damage mechanics , materials science , plasticity , structural engineering , fracture (geology) , elasticity (physics) , mechanics , composite material , physics , finite element method , engineering , quantum mechanics

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.

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