High Fidelity Hydroelastic Analysis Using Modal Matrix Reduction

Structural assessment is a main concern when designing and operating any sort of offshore structure. This meant to ensure that the structural integrity preserved along lifespan asset, withstanding worst sea-states will be encountered making sure accumulated fatigue damage not jeopardize its neither. The purpose this paper present fast reliable hydroelastic model. model based on time-domain tight-coupling three-dimensional FEM (finite element method) linear seakeeping hydrodynamics In order reduce computational cost dynamic simulations, high-fidelity solution projected onto modal basis obtain matrix system extend response amplitude operators (RAO) responses (MRAO). From there, number degrees freedom can greatly reduced by retaining only those eigenmodes preserving most elastic energy. use MRAOs and/or large reduction in allows us to: first, quickly analyse loadcases required design stage; second, implement digital twin for health monitoring operational conditions. also presents an application case developed methodology.