Reference : A two scale anisotropic damage model accounting for initial stresses in microcracked mat...
Scientific journals : Article
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/89269
A two scale anisotropic damage model accounting for initial stresses in microcracked materials
English
Levasseur, Séverine mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Collin, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Charlier, Robert mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Kondo, Djimédo [ > > ]
2011
Engineering Fracture Mechanics
Pergamon Press - An Imprint of Elsevier Science
78
1945-1956
Yes (verified by ORBi)
International
0013-7944
[en] Anisotropic damage ; Initial stresses ; Homogenization ; Micromechanics ; Geomaterials ; Microcracked media
[en] In a recent study [15], we proposed a class of isotropic damage models which account for initial stresses. The present paper extends this approach to anisotropic damage due to growth of an arbitrarily penny-shaped microcracks system. The basic principle of the upscaling technique in the presence of initial stress is first recalled. Then, we derive a closed-form expression of the elastic energy potential corresponding to a system of arbitrarily oriented microcracks. It is shown that the coupling between initial stresses and damage is strongly dependent of the microcracks density and orientation. Predictions of the proposed model are illustrated through the investigation of the influence of initial stresses on the material response under non monotonous loading paths. Finally, by considering a particular distribution ofmicrocracks orientation, described by a second order damage tensor, it is shown that the model is a generalization of the macroscopic damage model of Halm and Dragon [9], for which a physically-based interpretation is then proposed.
Researchers ; Professionals
http://hdl.handle.net/2268/89269
10.1016/j.engfracmech.2011.03.009

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
EFM_in press.pdfPublisher postprint600.09 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.