Reference : A time-dependent damage law in solids: a homogenization approach
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/70810
A time-dependent damage law in solids: a homogenization approach
English
Dascalu, Cristian [Université Joseph Fourier - Grenoble 1 - UJF > > > >]
François, Bertrand mailto [Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
2010
9th HSTAM International Congress on Mechanics
Yes
No
International
9th HSTAM International Congress on Mechanics
Limassol
Cyprus
[en] The theoretical developments and the numerical applications of a time-dependent damage law is presented. This law is deduced from considerations at the micro-scale where non-planar growth of micro-cracks, following a subcritical propagation criterion, is assumed. The passage from micro-scale to macro-scale is done through an asymptotic homogenization approach. The model is built in two steps. First, the effective coefficients are calculated at the micro-scale in finite periodical cells, with respect to the micro-cracks length and their orientation. Then, a subcritical damage law is developed in order to establish the evolution of damage. As shown by numerical simulations, the developed model enables to reproduce the long-term behavior encountering relaxation and creep effects.
http://hdl.handle.net/2268/70810

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