Multistable Mechanical Metamaterials for Sound Absorption

Key Points

• The aim is to design acoustic metamaterials that achieve high sound absorption coefficients across low frequencies and over a broad bandwidth.
• Proposed a tunable acoustic metamaterial based on a multistable structure.
• Conducted experiments to assess sound absorption performance at various frequencies.
• Analyzed the acoustic behavior in relation to the designed multistable properties.
• Achieved significant sound absorption at low frequencies with the proposed design.
• Demonstrated broad-bandwidth performance compared to traditional materials.
• Results indicate a unique capability for improved acoustic applications.