INVESTIGADORES
LUCCIONI Bibiana Maria
artículos
Título:
A directional Damage Model
Autor/es:
LUCCIONI FORNS, BIBIANA MARÍA; SERGIO OLLER,
Revista:
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2003 vol. 192 p. 1119 - 1146
ISSN:
0045-7825
Resumen:
A directional damage model for initially isotropic metals and geomaterials is presented in this paper. The model is based on a space transformation using an analogy with the theory of finite strains. As a result, damage is defined by a second order damage tensor. The basic equations of the model are derived from the thermodynamics of irreversible processes. A return-mapping algorithm is developed for the numerical integration of the model. Applications examples presented show that the model is able to reproduce damage-induced anisotropy, with directional stiffness degradation and hardening, under general loading conditions.
