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Regularised crack behaviour effects on continuum modelling of quasi-brittle materials under cyclic loading

Maxime Vassaux 1 Benjamin Richard 2 Frédéric Ragueneau 1 Alain Millard 3
2 EMSI - Laboratoire d'Etudes de Mécanique Sismique
SEMT - Service d'Etudes Mécaniques et Thermiques : DEN/DM2S/SEMT
3 LM2S - Laboratoire de Mécanique Systèmes et Simulation
SEMT - Service d'Etudes Mécaniques et Thermiques : DEN/DM2S/SEMT
Abstract : A continuum model for quasi-brittle materials able to reproduce mechanical phenomena related to cyclic loading is proposed. Specific care is taken to reproduce progressive stiffness recovery and hysteresis effects caused respectively by crack closure and friction. A virtual testing approach is set up to analyse the evolution of microscopic quantities during uni-axial cyclic tests and to justify an original and efficient modelling of these phenomena. Thus , a reg-ularised formulation of the homogenised multiple contact problem induced by the non-simultaneous closure of microscopic cracks is presented. The proposed continuum model is validated by means of member-scale simulations of reversely loaded reinforced concrete shear walls .
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Maxime Vassaux, Benjamin Richard, Frédéric Ragueneau, Alain Millard. Regularised crack behaviour effects on continuum modelling of quasi-brittle materials under cyclic loading. Engineering Fracture Mechanics, Elsevier, 2015, 149, pp.19. ⟨10.1016/j.engfracmech.2015.09.040⟩. ⟨hal-01271756⟩

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