In this work, the use of metamaterials for reducing vibration response is presented. By investigating a multi-material unit cell, constructed from a basic structure, a resonator, and designed conduction paths, the properties of an infinite 2D periodic metamaterial are examined. Through careful design, the metamaterial forms bandgap in the desired frequency range, where the free propagation of waves is inhibited. The bandgap is identified using dispersion curves computed through an inverse approach. The metamaterial was then fabricated using multi-material 3D printing. The fabricated structure is capable of forming bandgap, which can be tuned by heating the structure through the applied voltage. The structure was electrically contacted at multiple points and tested for self-awareness. The results confirmed the self-aware functionality of the metamaterial, which depends on the sensor cell location and the magnitude of the applied voltage.
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