Wave Load Calculation of Structural Strength Analysis for a Semi-Submersible Platform

摘要

For the global and fatigue structural strength analysis of a semi-submersible platform, the wave loads of design conditions are calculated by using the three-dimensional boundary element method. The maximum of vertical bending moment, torsion moment and horizontal split force are determined from a serious of design waves with limited wave periods and positions of incident wave crest, indicated by the wave phase from 0° to 360° in one wave period. The extreme wave loads under the combination of wave parameters and the transfer functions of wave loads are used as the input of hydrodynamic pressure in the three-dimensional FEM analysis process.