Plate formulation based on the strong discontinuity method for reinforced concrete components subjected to seismic loadings

E. Kishta (1) , B. Richard (1) , C. Giry (2) , F. Ragueneau (3)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 ENS Rabat - École normale supérieure - Rabat
3 ENS Cachan - École normale supérieure - Cachan

Damage models, developed in the last decades, insure a continuum descriptionof the fracture process zone in quasi-brittle materials but fail at representing neinformation of the cracking features such as openings and spacings. Recently, the conceptof displacement discontinuities embedded into a standard finite element has been provedto be effcient in modeling fracture of quasi-brittle materials. The present paper aims atcapturing crack openings in a natural way by using the Strong Discontinuity Approach(SDA). This later is coupled with a continuous anisotropic damage model accounting fordifferent crack orientations and crack closure effects. A regularized version of the Diracdistribution and the hardening parameter allows for the establishment of an enrichedmodel compatible with the continuous one. Numerical simulations at the integrationpoint level and a three-point bending test carried out on a single edge notched beam showthe performances of the model.

Keywords: Quasi-brittle material; Strong Discontinuity Approach; E-FEM; damage; Cast3M

Domains: Nuclear Experiment [nucl-ex]; Nuclear Theory [nucl-th]

E. Kishta, B. Richard, C. Giry, F. Ragueneau. Plate formulation based on the strong discontinuity method for reinforced concrete components subjected to seismic loadings. International Conference on Computational Plasticity, Sep 2015, Barcelone, Spain. ⟨cea-02492577⟩