Skip to Main content Skip to Navigation
Theses

Propagation de fissures et endommagement par microfissures des matériaux viscoélastiques linéaires non vieillissants

Abstract : Most of France's energy is nuclear. The reactor building comprises a internal and external containment. The internal containment is prestressed to limit the flow of leakage in the internal-external space. The prestress decreases during time by the creep of concrete. It may propagate the cracks by the accidental internal pressure. So we define two research problems : propagation of macrocracks in viscoelastic structure ; effective behavior of microcracked viscoelastic material. Firstly, we develop a Burger viscoelastic model of concrete with two approaches: numerical and analytical. Then we solve the problem of single cracks in developing thermodynamically the concept of energy release rate. In the third part we develop a viscoelastic model to study the effective behavior of microcracked materials in the case without propagation. The problem of propagation of microcracks is then studied by a numerical approach based on the "representative pattern morphology". These studies are finally applied to solve the problems of crack propagation and damage of containment under accidental internal pressure
Document type :
Theses
Complete list of metadatas

https://pastel.archives-ouvertes.fr/tel-00598511
Contributor : Abes Star :  Contact
Submitted on : Monday, June 6, 2011 - 4:23:19 PM
Last modification on : Friday, January 24, 2020 - 9:52:46 AM
Long-term archiving on: : Sunday, December 4, 2016 - 4:52:49 PM

File

TH2010PEST1082_complete.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00598511, version 1

Citation

Sy Tuan Nguyen. Propagation de fissures et endommagement par microfissures des matériaux viscoélastiques linéaires non vieillissants. Autre. Université Paris-Est, 2010. Français. ⟨NNT : 2010PEST1082⟩. ⟨tel-00598511⟩

Share

Metrics

Record views

1550

Files downloads

317