Hydroelastic response of a floating flexible platform under oblique wave-current interaction

Amouzadrad, P.; Mohapatra, S.C.; Guedes Soares, C.

Key information

Authors:

Amouzadrad, P. (Pouria Amouzadrad); Mohapatra, S.C. (Sarat Chandra Mohapatra); Guedes Soares, C. (Carlos Guedes Soares)

Published in

March 15, 2026

Abstract

An analytical model of oblique wave-current interaction with a moored, floating, flexible structure is developed based on the Timoshenko-Mindlin beam theory, assuming small-amplitude wave theory and small structural response. Theoretical solutions for the hydrodynamic coefficients, reflection and transmission coefficients, and structural displacements are calculated by applying the matching technique in conjunction with the orthogonal mode-coupling relation. The analytical results for structural displacements are compared with independent numerical simulations using a BEM code and with experimental data sets available in the open literature. Furthermore, the hydroelastic response for different design parameters, as well as structural displacements, shear force, bending moment, and hydrodynamic coefficients, is analysed using analytical solutions. Meanwhile, contour plots of the transmission wave amplitudes around the structure are generated using numerical methods. The comparison results show that both the numerical model results and the experimental data sets support the present model's findings. This analysis may be helpful in providing a better understanding of the parameters for designing a floating flexible platform in the marine environment.