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Article Dans Une Revue International Journal of Solids and Structures Année : 2024

Fully coupled nonlinear thermomechanical modeling of composites using mean-field Mori–Tanaka scheme combined with TFA theory

Résumé

This article aims at proposing a new mean-field homogenization framework for the study of composites undergoing fully coupled thermomechanical processes. Strongly dissipative phenomena during high or moderate cyclic loading conditions in a structural component made of a composite material cause significant interplay between mechanical and thermal fields. The proposed framework attempts to address such effect by combining the Mori-Tanaka scheme and the Transformation Field Analysis (TFA) theory and by developing a multiscale framework capable of taking into account thermomechanically coupled processes. The numerical simulations performed in the examples section and validations with computations using periodic homogenization and full-structure analysis demonstrate the proposed strategy’s accuracy and robustness. The numerical simulation of a tube shows the model’s ability to simulate cyclic loading conditions with significantly less computational cost than the alternative FE 2 computation strategies. This drastic computational time reduction is due to the semi-analytical formalism of the micromechanics methodology.
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Dates et versions

hal-04554019 , version 1 (22-04-2024)

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George Chatzigeorgiou, Fodil Meraghni, Qiang Chen. Fully coupled nonlinear thermomechanical modeling of composites using mean-field Mori–Tanaka scheme combined with TFA theory. International Journal of Solids and Structures, 2024, 296, pp.112828. ⟨10.1016/j.ijsolstr.2024.112828⟩. ⟨hal-04554019⟩
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