THE TRANSIENT-RESPONSE OF A 2-LAYERED ELASTIC CYLINDRICAL-SHELL IMPINGED BY AN UNDERWATER SHOCK-WAVE

The governing equations of a two-layered circular cylindrical shell ha ve been derived. A recently developed theoretical approximation, the r eflected-afterflow-virtual-source (RAVS) model was applied to determin e the fluid-structure interaction. Cases of two-layered infinitive len gth elastic cylindrical shell impinged by planar shock waves were inve stigated by using finite difference method. Results by using this mode l were compared to those by using the software USA/LSDYNA3D, and they are in good agreement. Some parametric studies were done to study the effect of the Young's modulus Ei and thickness hi of the structure on the transient responses of the shell. (C) 1998 Published by Elsevier S cience Ltd. All rights reserved.