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A Ductile Damage Nonlocal Model of Integral-type at Finite Strains: Formulation...
F.X.C. Andrade; J. M. A. César de Sá; F.M. Andrade Pires
IMPROVEMENT OF THE NUMERICAL PREDICTION OF DUCTILE FAILURE WITH AN INTEGRAL NO...
F. X. C. Andrade; Pires, F. M. A.; de Sá, J. M. A. C.; Malcher L.In this contribution, the implementation of a nonlocal formulation is described aiming to improve the reliability of the numerical prediction of ductile failure. The nonlocal model, which is based on a simplified version of Lemaitre's material model [1], is achieved by redefining the damage variable to be nonlocal using an integral formulation. The nonlocal constitutive problem is then discretised with respect ...
NUMERICAL INTEGRATION ALGORITHM OF A NEW MODEL FOR METAL PLASTICITY AND FRACTUR...
L. Malcher; F. M. Andrade Pires; César de Sá; F. X. C. AndradeThis paper describes an efficient numerical integration algorithm of a new model for metal plasticity and fracture [2]. The constitutive equations of the material model critically include both the effect of pressure through the triaxiality ratio and the effect of third deviatoric stress invariant through the lode angle in the description of material. The necessary steps required to implement the model within an...
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