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Dynamic response of sandwich beams with resonators embedded in the coressubjected to impact loads is studied. Using finite element models theeffectiveness of various local resonator frequencies under a given impact loadis compared to the behavior of an equivalent mass beam. It is shown thataddition of appropriately chosen local resonators into the sandwich beam is aneffective method of improving its flexural bending behavior under impact loads.The effect of a given local resonance frequency under different impact loaddurations is also studied. It is demonstrated that the choice of appropriatelocal resonance frequency depends on the impact duration. Further, byperforming transverse impact experiments, the finite element models areverified and the advantage of using internal resonators under impact loadingconditions is demonstrated.

Impact load mitigation in sandwich beams using local resonators