Abstract: In this investigation,a mechanical model is developed for the characterizationof inelastic mechanical responses in brittle materials due to damage when the time and ratedependent behaviors are insignificant。The formulation is based on the concepts of damagesurface and damage potential.The approach makes the derivation of evolution law of thematerial coefficients and the anisotropic constitutive equation of the brittle materials pos-sible, based on the assumption that the changes in material properties due t...