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Une nouvelle loi constitutive pour la description du comportement cyclique des materiaux quasi-fragiles: effet unilatéral régularisé et effets hystérétiques

Abstract : A continuum model for quasi-brittle materials able to reproduce mechanical phenomena related to cyclic loading is proposed. A virtual testing approach is set up to analyze the evolution of microscopic quantities during uniaxial cyclic tests and justify an original and efficient modeling of these phenomena. Thus, a regularized formulation of the homogenized multiple contact problem induced by the non-simultaneous closure of microscopic cracks is proposed. The proposed continuum model is validated by means of member-scale simulations of alternately loaded reinforced concrete shear wall.
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M. Vassaux, B. Richard, F. Ragueneau, A. Millard. Une nouvelle loi constitutive pour la description du comportement cyclique des materiaux quasi-fragiles: effet unilatéral régularisé et effets hystérétiques. 22ème Congrès Français de Mécanique, Aug 2015, Lyon, France. ⟨cea-02492552⟩

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