[SY-J3] The attenuation of stress wave propagation in multilayer structure
In recent years, many biological structures with excellent impact resistance have been studied, such as the stomatopod dactyl club, fish scales, etc. These biological structures have a multi-layered structure and each layer structure has different material properties. These specific bio-layered structures not only have higher hardness and modulus, but also have higher dissipative stress wave performance. In this paper, the influence of the material properties and the arrangement order of the multilayer structure on the propagation of stress waves is studied, in order to obtain a multilayer structure with higher attenuation stress wave energy. The propagation of stress wave in the material of viscoelastic layer changes with the frequency of stress wave. The transmission coefficient of the stress wave in the multilayer structure has frequency effect and size effect.