Residual stresses in a ceramic-metal composite

Vincent Cazajus (1) , Sébastien Seguy (2) , Hélène Welemane (1) , Moussa Karama (1)

1 LGP - Laboratoire Génie de Production
2 ICA - Institut Clément Ader

The work of this study concerns the fine modelling of the thermomechanical and metallurgical behavior of interface ceramic-metal in order to determine the residual mechanical state of the structures during brazing process. For these cases, difficulties mainly arise in the modelling of the solid-solid phase transformations as well as in the modelling of the mechanical behavior of the multiphasic material. Within an original theoretical framework generalized standard materials with internal constraints we proposed models for the behavior of multiphasic material. The design of joints in engineering structures and the optimisation of the industrial brazing process require determining and analysing such a phenomenon. In this way, the present work aims at predicting the thermally induced stresses (localisation and level) through numerical simulations and then, at defining the main parameters which influence their development.

Mots clés: Thermo-mechanical analysis; Ceramic-metal; Residual stresses; Numerical simulations

Domaines: Thermique [physics.class-ph]; Mécanique des structures [physics.class-ph]

Vincent Cazajus, Sébastien Seguy, Hélène Welemane, Moussa Karama. Residual stresses in a ceramic-metal composite. Applied Mechanics and Materials, 2012, 146, pp.185-196. ⟨10.4028/www.scientific.net/AMM.146.185⟩. ⟨hal-00784294⟩