Abstract
We report on an analytical model for damage description in adhesive butt joints. In themodel, the thin adhesive layer is replaced by a damaging bonding interface. The mechanical behaviorof the interface is described by a nonlinear and ratedependent imperfect contact law. The law takesinto account both stress and displacement jumps, and it can describe both soft and hard adhesive layers.Unlike classic cohesive zone models, phenomenological in nature, the proposed contact law explicitlyaccounts for material and damage properties of the adhesive layer. A first comparison with literaturedata of adhesive butt joints loaded in torsion indicates that the model can successfully reproduce theirexperimental stressstrain response.
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