Metamaterials for influencing vibroacoustics through the resonance effect.
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The use of natural fiber-reinforced plastics in lightweight construction makes products competitive and sustainable.
Noise, vibrations, and oscillations significantly impact the quality of life and everyday comfort. According to the latest studies by the World Health Organization (WHO), noise is the second largest health risk for humans. In particular, the mobility sector represents one of the significant sources of noise. Furthermore, lightweight structures are increasingly being used here. On the one hand, this leads to lower fuel consumption and reduced CO2 emissions. On the other hand, due to higher structural flexibility, it results in larger vibration amplitudes and consequently unfavorable operating conditions, wear, and noise.
Vibroacoustic Metamaterials (VAMM) reduce vibrations and noise, stabilize devices, and enhance comfort through specially arranged resonators.
Conventional approaches to vibration and noise reduction, such as measures like damping materials, individual dampers, and acoustic resonators, can only solve these problems to a limited extent. However, structures with periodically arranged resonators can resolve the trade-off between lightweight construction and optimal vibroacoustic behavior. These structures are referred to as vibroacoustic metamaterials (VAMM).