Three-dimensional transient analysis of a single submerged cylindrical shell

Abstract

Three-dimensional transient analysis of a submerged cylindrical shell is presented. Three-dimensional trilinear eight-noded isoparametric fluid element with pressure variable as unknown is coupled to a nine-noded degenerate shell element. Staggered solution scheme is shown to be very effective for this problem. This allows significant flexibility in selecting an explicit or implicit integrator to obtain the solution in an economical way. Three-dimensional transient analysis of the coupled shell fluid problem demonstrates that inclusion of bending mode is very important for submerged tube design-a factor which has not received attention, since most of the reported results are based on simplified two-dimensional plane strain analysis.