Toward a virtual material for lifetime prediction of CMCs

Martin Genet (1) , Pierre Ladevèze (1, 2) , Gilles Lubineau (1) , Emmanuel Baranger (1) , A Mouret (3)

1 LMT - Laboratoire de Mécanique et Technologie
2 EADS Foundation Chair Advanced Computational Structural Mechanics
3 SPS - Snecma Propulsion Solide

A first version of a multi­scale, multi­physic & hybrid model –called virtual material– for predictions on Self­Healing Ceramic Matrix Composite's (CMCs) lifetime is presented. The model has a mechanical and a chemical part, which are presented here in their actual state of development. The mechanical part provides precise data for the chemical models through an hybrid –melting continuum damage macro­ model & discrete crack surfaces– representation of the morphology of the crack network at yarn scale. The chemical part should provide predictions on the structure's lifetime using a model of the self­healing process, not yet achieved then not presented here, and a model of fiber sub­critical failure under mechanical and chemical load.

Domaines: Mécanique des matériaux [physics.class-ph]

Martin Genet, Pierre Ladevèze, Gilles Lubineau, Emmanuel Baranger, A Mouret. Toward a virtual material for lifetime prediction of CMCs. 13th European Conference on Composites Materials, Jun 2008, Stockholm, Sweden. ⟨hal-01274810⟩