Hybrid analytical-numerical methodology for computationally efficient pre-design analysis of fluid-structure interaction

Abstract

Analytical approach to modeling the interaction between submerged elastic structures and non-stationary loads has long been recognized as an attractive tool of engineering analysis, especially at the pre-design stage where it has been particularly valued for its high computational efficiency. At the same time, the approach has a number of limitations, the most regrettable one being its inability to handle geometries that are more complex than the basic ones such as a spherical or cylindrical geometry. We present an attempt to overcome this limitation while still preserving the much favored computational efficiency by introducing a hybrid methodology that combines the analytical and finiteelement approaches. We then validate the methodology using available experimental data and show that a good agreement with the experiments is observed.