期刊
ENGINEERING FRACTURE MECHANICS
卷 147, 期 -, 页码 480-497出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2015.08.004
关键词
Anisotropy; Ductile fracture; Damage indicator model; Mohr-Coulomb; Linear transformation of stress tensor
类别
资金
- French National Research Agency [ANR-11-BS09-0008]
- Industrial Fracture Consortium
- Agence Nationale de la Recherche (ANR) [ANR-11-BS09-0008] Funding Source: Agence Nationale de la Recherche (ANR)
An anisotropic extension of the Hosford-Coulomb localization criterion is obtained through the linear transformation of the stress tensor argument. Unlike for isotropic materials where the stress state is characterized through the stress triaxiality and Lode parameter, the normalized Cauchy stress tensor is used to describe the stress state in an anisotropic solid. Based on experiments on extruded aluminum 6260-T6 covering stress states from pure shear to equi-biaxial tension for different material orientations, it is shown that this phenomenological and uncoupled model is capable to provide reasonable engineering approximations of the strains and displacements to fracture for thirteen different loading conditions. (C) 2015 Elsevier Ltd. All rights reserved.
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