Damaged Anelastic Behavior of FCC Polycrystalline Metals with Micromechanical Approach

摘要: A theoretical micromechanical model is proposed to describe the damaged behavior of polycrystalline metals. Based on slip theory, a local micro-damage variable representing transgranular damage introduced and fully coupled with micro-macro anelastic constitutive equations for FCC polycrystals by Cailletaud (1987, 1992). The supposed be initiated then evolved activated crystallo graphic systems define isotropic at macroscopic level (i.e., in Repre sentative Volume Element RVE). coupling between both microscopic levels carefully discussed. obtained applied discussed case uniaxial monotonic cyclic loading, neglecting quasi- unilateral effect as well localization fatigue micro-cracks surface loaded medium.