Regularised crack behaviour effects on continuum modelling of quasi-brittle materials under cyclic loading
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 .
Domains
Physics [physics] Mechanics [physics] Mechanics of materials [physics.class-ph] Physics [physics] Mechanics [physics] Materials and structures in mechanics [physics.class-ph] Engineering Sciences [physics] Civil Engineering Risques Computer Science [cs] Numerical Analysis [cs.NA] Physics [physics] Mechanics [physics] Solid mechanics [physics.class-ph] Physics [physics] Mechanics [physics] Structural mechanics [physics.class-ph] Engineering Sciences [physics] Materials Engineering Sciences [physics] Civil Engineering Génie civil nucléaire Engineering Sciences [physics] Civil Engineering Géotechnique Engineering Sciences [physics] Civil Engineering Matériaux composites et construction Engineering Sciences [physics] Civil Engineering Structures
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