Nonlinear analysis on the interaction of waves and flexible floating structure

摘要

A nonlinear numerical method, which is applicable to arbitrary wave conditions, is developed to analyze the hydroelastic responses of a flexible floating structure by applying BEM to evaluate the fluid motion and FEM to analyze the deformation of structure. A time domain solution is obtained by prescribing the conditions on wave generation boundary for each time step. The effect of space and time discretizations U the convergence and stability of solution is discussed by comparing among numerical solutions, so that their optimum combinations for regular, multi-component and solitary waves are obtained respectively. The validity of the present method is verified by comparing with u-mental results for the three kinds of waves mentioned above.