Extracting improved mechanical properties such as high stiffness-high damping and high strength-high toughness arebeing investigated recently using high symmetry interlocking micro-structures. On the other hand, development ofartificially engineered composite metamaterials has significantly widen the usability of such materials in multipleacoustic applications. However, investigation of elastic wave propagation through high symmetry micro-structures isstill in trivial stage. In this work, a novel interlocking micro-architecture design which has been reported previously forthe extraction of improved mechanical properties has been investigated to explore its acoustic responses. The finiteelement simulations are performed under dynamic wave propagation load at multiple scales of the geometry and for arange of material properties in frequency domain. The proposed composite structure has shown high symmetry which isuncommon in fiber-reinforced polymer composites and a desirable feature for isotropic behavior. The existence ofmultiple acoustic features such as band gap and near-isotropic behavior have been established. An exotic wavepropagation feature, wave trapping and attenuation, has shown energy encapsulation in a series of repeating structures ina frequency range of 0.5 kHz to 2 kHz.
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