Damage progress in metal/fiber-reinforced polymer structures with different viscoelastic interface geometries

he damage progression in light weight engineering structures, like aluminum/fiber-reinforced polymer specimens, is studied. The finite element method is used to model a single overlap tensile joint. The contact area between the metal part and the composite part is computed by means of an interface material. A viscoelastic model with the Lemaitre-type damage is applied for the interface simulation. The influence of the interface geometry on the damage of the joint is considered. It is shown that the damage progress depends on geometry of the interface. The present work contains the numerical analysis of fracture and damage resistance of the specimens with square, circle and moon-like geometry of the joint