Nonlocal damage based failure models, extraction of crack opening and transition to fracture

Frédéric Dufour (1) , Gilles Pijaudier-Cabot (2) , Grégory Legrain (3)

1 3SR - Laboratoire sols, solides, structures - risques [Grenoble]
2 TEFC - Thermodynamique et Energétique des fluides complexes
3 GeM - Institut de Recherche en Génie Civil et Mécanique

Damage models are capable to represent initiation and somehow crack propagation in a continuum framework. Thus crack openings are not explicitly described. However for concrete structures durability analysis, crack opening through transfer properties is a key issue. Therefore, in this contribution we present a new approach that is able from a continuum modelling to locate a crack from internal variable field and then to estimate crack opening along its path. Results compared to experimental measures for a three point bending test are in a good agreement with an error lower than 10% for widely opened crack (40μm).

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Matériaux

Frédéric Dufour, Gilles Pijaudier-Cabot, Grégory Legrain. Nonlocal damage based failure models, extraction of crack opening and transition to fracture. EURO-C 2010 - Computational Modelling of Concrete Structures, Mar 2010, Schladming, Austria. pp.301-308. ⟨hal-00867866⟩