Open AccessSimulation numérique de la propagation de fissure dans les superalliages monocristallins
Author(s) -
Jean-Luc Bouvard,
Jean–Louis Chaboche,
Frédéric Feyel,
F. Gallerneau
Publication year - 2007
Publication title -
european journal of computational mechanics
Language(s) - English
Resource type - Journals
eISSN - 2642-2085
pISSN - 2642-2050
DOI - 10.13052/remn.16.845-863
Subject(s) - fissure , convergence (economics) , fracture mechanics , structural engineering , superalloy , materials science , mechanics , geology , composite material , engineering , physics , microstructure , economics , economic growth
In this study, a numerical method is developped to simulate fatigue crack growth. This method is based on a numerical coupled analysis using a cohesive zone modelling under cyclic loading in order to develop a coupled predictive approach of the crack growth. First, we present this damage law, then its validation by a convergence study of the solution with mesh size. We apply this model to the crack growth calculations in the case of a smooth specimen with a precracking made with a single crystal superalloy. Finally, we define the method to calibrate the cohesive zone model parameters on the base of experimental tests performed in pur fatigue regime.