Research on numerical constitutive model of concrete

A numerical constitutive model of concrete material is established. The key points of the model′s conception and methodology are as follows:first, it is that according to values of stress state to judge which kind of constitutive model shall be adopted; second, the experimental_data_based model which is without definite physical meaning can be adopted; third, the multiple judgement can be carried out; meanwhile, the stress release factor and shear transfer coefficient are introduced into the crack model. The crack patterns calculated by this method are consistent with the test results.