We study a 3D fluid-structure interaction (FSI) problem between an incompressible, viscous fluid modeled by the Navier-Stokes equations, and the motion of an elastic structure, modeled by the linearly elastic cylindrical Koiter shell equations, allowing structure displacements that are not necessarily radially symmetric. The problem is set on a cylindrical domain in 3D, and is driven by the tim...

Cylindrical structure is a kind of common protective structure, its internal support generally homogeneous or rigid, energy absorption buffer ring can effectively improve impact resistance. In this paper, comparative study the resistance cylindrical structures with composite cushioning rings under double loads carried out. The results show that honeycomb core layer negative Poisson’s ratio effe...