Concrete is one of oldest materials, with quasi brittle proprieties close to those of rocks. Apai from linear elastic domain, behaviour of concrete under multiaxial and cyclic loading is vely complex . The elaboration of an appropriate damage model is of g a t importance to simulate such complex phenomenon especially for exceptional buildings (Nuclear station... ).
MODEV model of the CSTB simulates concrete degadation. This damage model takes into account simultaneously two types of deformations causing concrete damage: deviatoric equivalent strain and hydrostatic one. The model includes also anelastic deformations and unilateral effect. The focus of this work is to adapt MODEV model for cyclic loadings cases and to use it afterward for industrial application to bring responses concerning the behaviour of anchors under eaihquake motion.
This work shows frst, new MODEV model formulation and new approach for identifying the model parameters. Simplified analytical calculus is used to defme parameters acting on concrete compression strength whereas experimental data are used to predict anelastic deformation. To overcome concrete strength dependence on structure’s mesh, objectivity is respected in both tension and compression. The homothecy between crack energies for these two cases of loading is assured. The MODEV model is integated into CEA CASTEM fmite element code.
Thereafter, the second pai exposes validation with literature examples and industrial application on metal anchors. These anchors are widely used in constructions and they are subjected to several loads. The approoaches adooted for the characterization of anchors under static loadings (tension, shear, combined)  give good results comparing models and experimentations. However, the approaches used until now to qualify these anchors under seismic loading are mainly based on experimentation. Complete modelling is carried out using MODEV damage model for concrete, unilateral contact with friction to simulate the interface between concrete and anchors under appropriate cyclic loading. This approach including cyclic loading and the interaction of various existing phenomena will bring finally new elements for proposal in Eurocode.