Abstract
The damaged interface affects the strain field in two ways. First, it makes the strain field inside inclusions no longer uniform as that of inclusions with perfectly bonded interface. Secondly, it contributes to the average strain in composite by an integration of relative displacement between matrix and inclusion over their interface. In present paper, the first effet is considered by using an averaged Eshelby's S-tensor. The second effect is expressed in terms of the corresponding eigenstrain, by introducing a damage-relevant tensor D. A rigorous constitutive model of self-consistency was schemed. Both the tangential and normal discontinuities at the interface are independently modeled. It is found that the imperfect interface conditions of debonding and/or sliding give detrimental effects on the overall properties of composites. Thus, the establishment of the most appropriate model describing properly the meso-local phenomena.
