Noise, vibrations and shocks significantly impair the quality of life and everyday comfort. According to the latest studies by the World Health Organization-WHO, noise is the second greatest health risk for people. The mobility sector in particular is one of the main sources of noise. In addition, lightweight structures are increasingly being used here. On the one hand, this leads to lower fuel consumption and lower CO2 emissions, and on the other hand, due to the higher structural flexibility, to greater vibration amplitudes and consequently to unfavorable operating conditions and noise.
Conventional approaches to vibration and noise reduction, e.g. measures such as insulating material, tuned vibration absorbers and acoustic resonators, can only solve these problems to a limited extent. Structures with periodically arranged resonators, on the other hand, can resolve the trade-off between lightweight construction and optimal vibroacoustic behavior. These structures are called vibroacoustic metamaterials (VAMM).