FAR-FIELD FLUID-STRUCTURE INTERACTION - FORMULATION AND VALIDATION

This paper presents a method for studying the effects of fluid-structu re interaction on submerged structures subjected to dynamic loading. T he phenomena of reflections radiating from artificial boundaries is fi rst explained. Then a procedure which simulates the effect of a non-re flecting boundary is described. Next, both exponential and step plane waves are employed to model shock loading. The developments are implem ented in the general purpose finite element structural package ASAS-NL . The proposed formulation is validated by testing two-dimensional and axi-symmetric submerged fluid-structure interaction problems for whic h there are existing numerical and analytical solutions.