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


Article Preview

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.



Edited by:

Jesús Toribio, Vladislav Mantič, Andrés Sáez, M.H. Ferri Aliabadi




B. Michel et al., "3D Continuum Damage Approach for Simulation of Crack Initiation and Growth in Ceramic Materials", Key Engineering Materials, Vol. 713, pp. 155-158, 2016

Online since:

September 2016




* - Corresponding Author

[1] B. Michel, J. Sercombe, G. Thouvenin, R. Chatelet, 3D fuel cracking modelling in pellet cladding mechanical interaction, Engineering Fracture Mechanics 75 (2008) 3581–3598.

DOI: https://doi.org/10.1016/j.engfracmech.2006.12.014

[2] T. Helfer, Introducing the open-source MFront code generator : application to mechanical behaviours and material knowledgemanagement within the PLEIADES fuel element modelling plateform, Computers and Mathematics with Applications, accepted the 24th June (2015).

DOI: https://doi.org/10.1016/j.camwa.2015.06.027

[3] B. Michel and al., Simulation of the Pellet Cladding Interaction phenomenon with the PLEIADES fuel performance software environment, Nuclear Technology 182 (2), 124-137.

DOI: https://doi.org/10.13182/nt13-a16424

[4] B. Michel and al., A new phenomenological criterion for pellet–cladding interaction rupture, Nuclear Engineering and Design 238 (7), 1612-1628.

DOI: https://doi.org/10.1016/j.nucengdes.2008.01.012

[5] J. Sercombe and al., 1D and 3D analyses of the Zy2 SCIP BWR ramp tests with the fuel codes METEOR and ALCYONE, Nuclear Engineering and Technology, 41(2009) pp.187-198.

DOI: https://doi.org/10.5516/net.2009.41.2.187

[6] C. Esnoul and al., Use of micromechanical approach to investigate transient fuel fragmentation mechanisms, TopFuel 2015 Conference Proceedings - oral presentations - Part II, pp.476-485.

[7] http: /www-cast3m. cea. fr.

[8] http: /tfel. sourceforge. net.