Skip to Main content Skip to Navigation
Journal articles

3D Continuum Damage Approach for Simulation of Crack Initiation and Growth in Ceramic Materials

Bruno Michel 1 Thomas Helfer 1 Isabelle Ramière 1 Coralie Esnoul 2 
1 LSC - Laboratoire de Simulation du Comportement des Combustibles
SESC - Service d'Etudes de Simulation du Comportement du combustibles : DEN/DEC/SESC
Abstract : This paper focuses on the numerical simulation of crack initiation and growth in ceramic materials. This work is devoted to nuclear fuel modelling under irradiation and more precisely to fuel pellet fragmentation assessment at macroscopic and microscopic scales. Simulation tools are developed in the framework of a cooperative program between the CEA, EDF and AREVA devoted to a unified fuel performance software environment called PLEIADES. A smeared crack model is proposed to have a continuous description of crack nucleation and growth at macroscopic scale. This unified description is based on crack extension process from the microscopic scale up to the macroscopic scale. In order to deal with unstable crack extension a specific algorithm is proposed to solve the quasi static nonlinear mechanical problem. A 3D application is presented to illustrate performances and robustness of the smeared crack approach to simulate crack extension in nuclear fuel ceramics. In this application with an internal pressure loading a new methodology is proposed in order to avoid convergence problem due to the indetermination of the quasi static formulation of a softening material equilibrium under Neumann boundary condition.
Complete list of metadata

Cited literature [6 references]  Display  Hide  Download
Contributor : Isabelle RAMIERE Connect in order to contact the contributor
Submitted on : Friday, November 25, 2016 - 4:51:44 PM
Last modification on : Friday, February 18, 2022 - 9:28:02 PM
Long-term archiving on: : Tuesday, March 21, 2017 - 1:17:34 PM


Files produced by the author(s)




Bruno Michel, Thomas Helfer, Isabelle Ramière, Coralie Esnoul. 3D Continuum Damage Approach for Simulation of Crack Initiation and Growth in Ceramic Materials . Key Engineering Materials, Trans Tech Publications, 2016, Advances in Fracture and Damage Mechanics XV 713, pp. 155-158 ⟨10.4028/⟩. ⟨cea-01403309⟩



Record views


Files downloads