The concept of structural interface possessing finite width and joining continuous media is presented. Mechanical effects differentiating this model from conventional zero-thickness interfaces are explored for static and dynamic problems. In the static case, the thickness of the interface introduces an additional characteristic length, providing a parameter which can serve different design needs, for instance, may be employed to obtain neutral coated inclusions. In the dynamic case, a number of effects arise, related to the inertia of the interface. In particular, examples demonstrate that the design of inertial properties of the interface may be useful to produce sharp filters of elastic waves.
REF discuss the concept of a structural interface of finite width and joining continuous media.
Statics and dynamics of structural interfaces in elasticity
International Journal of Solids and Structures
Materials Science