FRACTURE ENERGY OF CONCRETE AT VERY EARLY AGES BY INVERSE ANALYSIS
FARAH, Mounia
Laboratoire d'informatique et d'automatique pour les systèmes [EA 6315] [LIAS [Poitiers]]
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Laboratoire d'informatique et d'automatique pour les systèmes [EA 6315] [LIAS [Poitiers]]
FARAH, Mounia
Laboratoire d'informatique et d'automatique pour les systèmes [EA 6315] [LIAS [Poitiers]]
< Leer menos
Laboratoire d'informatique et d'automatique pour les systèmes [EA 6315] [LIAS [Poitiers]]
Idioma
en
Communication dans un congrès avec actes
Este ítem está publicado en
FraMCoS-8 VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures, 2013-03-10, Toledo.
Resumen en inglés
In this paper, the fracture characteristics of concrete at very early ages are investigated. Experimentally , three point bending tests are performed on notched beams at very early-ages (before 24 h) and the Load-CMOD ...Leer más >
In this paper, the fracture characteristics of concrete at very early ages are investigated. Experimentally , three point bending tests are performed on notched beams at very early-ages (before 24 h) and the Load-CMOD curves are obtained. In order to find the trend of the evolution of the fracture energy, an inverse analysis procedure is developed. A damage model based on an energetic regular-ization is combined with a non linear inverse analysis algorithm. As the stress-strain curve (and the stress-crack opening one) given by the damage model is non linear, the Levenberg-Marquardt algorithm is chosen. Results obtained from numerical simulations show that fracture energy of concrete increases with age.< Leer menos
Palabras clave en inglés
Fracture energy
early age
inverse analysis
Orígen
Importado de HalCentros de investigación