A novel anti-hydrostatic force-chain metastructure

With the increase of water depth, the degradation of the performance of acoustic coating in underwater equipment has long plagued researchers. In this paper, a viscoelastic underwater sound-absorbing metastructure that can withstand 3 MPa underwater pressure is formed by embedding particulate matter in viscoelastic materials. Taking the two-dimensional structure as the research object, the factors affecting the force-chain properties are analyzed using simulations. It is important that the effectiveness of the filling of particulate matter in the 3D model is verified, which provides a possibility for the design and manufacture of water pressure insensitive underwater sound-absorbing materials.