We have developed a series of isogeometric finite element-boundary element (IGAFEM-IGABEM) formulations to address hydroelastic vibration and fluid–structure interaction problems in marine and offshore engineering. By employing NURBS basis functions, these approaches integrate exact CAD geometry with high-order discretization, achieving greater accuracy and efficiency compared to conventional FEM-BEM approaches.
Key contributions include:
Hydroelastic vibration of plates and shells: Formulated IGAFEM–IGABEM coupling for free vibration of thin plates and shells partially in contact with fluid, demonstrating geometry-exact and computationally efficient analysis.
Free-surface fluid effects: Extended the framework to analyze elastic structures in contact with a free-surface fluid, highlighting the impact of surface waves.
Foundation interactions: Incorporated elastic foundation effects into the IGAFEM-IGABEM framework, enabling more realistic modeling of structural supports under fluid loading.
Experimental validation: Performed experimental measurements on the elastic structures in contact with fluid, showing close agreement between predicted and measured natural frequencies and mode shapes.