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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Numerical Studies on Dynamic Characteristics of Acoustic Metamaterials
Oguzhan Sen and Mehmet Yetmez
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DOI:10.17265/1934-7359/2025.11.003
Department of Mechanical Engineering, Zonguldak Bulent Ecevit University, Zonguldak 67100, Turkey
Acoustic metamaterials are artificially designed structures that demonstrate extraordinary capabilities in manipulating wave propagation by exploiting geometry-driven physical phenomena that transcend the limitations of traditional materials. Their complex architectures facilitate advanced functions such as sound absorption, vibration reduction, and directional wave control, making them highly applicable in sectors such as aerospace, automotive, and construction engineering. In this study, the dynamic acoustic responses of four different metamaterial configurations with geometric designs—honeycomb, gyroid, lattice, and cylindrical resonator—were numerically investigated using four base materials: aluminum, epoxy resin, steel, and carbon fiber reinforced polymer (CFRP). Frequency domain simulations were performed using COMSOL Multiphysics® to evaluate fundamental acoustic performance indicators, including transmission loss, phase velocity, acoustic impedance, and resonance characteristics. The findings indicate that geometry has a dominant effect on acoustic behavior, while material parameters such as density and stiffness play important roles in managing phase response and frequency-dependent sensitivity. Interestingly, despite differences in materials and structural configurations, the general patterns of transmission loss and phase velocity have shown consistent trends in most cases; this implies that geometric distribution and boundary constraints largely determine wave propagation phenomena. This integrative numerical framework provides valuable guidance for the rational design and optimization of next-generation acoustic metamaterials through strategic material-geometry coupling.
Metamaterials, phase velocity, transmission loss, analysis, COMSOL Multiphysics.
Journal of Civil Engineering and Architecture 19 (2025) 528-537
doi: 10.17265/1934-7359/2025.11.003
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