Simultaneous acoustic and vibration isolation metamaterials based on triply periodic minimal surface

Abstract

Metamaterials have attracted widespread attention because they exhibit novel physical behaviors not found in nature. In recent years, due to the excellent properties of triply periodic minimal surface (TPMS) structures, TPMS-based architected materials have played an increasingly important role in many fields. However, most TPMS-based research has focused on single functionality. This study introduces novel TPMS-based metamaterials designed for simultaneous vibration isolation and sound insulation, providing a multifunctional solution. We constructed TPMS structures and analyzed their mechanical properties, exploring how their topology and geometric parameters influence the attenuation of vibration and sound. Through simulations and experimental validations, we demonstrate that these metamaterials can effectively attenuate sound and elastic waves within a specific frequency range. This provides an innovative design approach for materials requiring combined acoustic and vibration control. The work demonstrates the ability to dynamically tune band gaps for multiple wave types by modifying structural parameters. This paves the way for developing advanced multifunctional materials with tailored acoustic and mechanical properties. Additionally, building on this work, future research could focus on refining fabrication processes and investigating different TPMS configurations. Expanding the frequency range could further enhance the robustness and practical applicability of these multifunctional materials.