The paper carries out a finite element analysis on the structural strength of a pontoonduring ship launching.Considering the effect of ship stiffness on pontoon counter-deformation,the paper deduces the distribution of launching block's reaction force in longitudinal direction after the pontoon being deformed during ship's launching,and it develops a loading technique of launching block's reaction force.Two engineering samples prove that the general and local strength of pontoon can be checked... The paper carries out a finite element analysis on the structural strength of a pontoonduring ship launching.Considering the effect of ship stiffness on pontoon counter-deformation,the paper deduces the distribution of launching block's reaction force in longitudinal direction after the pontoon being deformed during ship's launching,and it develops a loading technique of launching block's reaction force.Two engineering samples prove that the general and local strength of pontoon can be checked by the calculation method.Some meaningful results of launching calculation are obtained from two engineering samples as reference for other ship launching.This method can be applied in the engineering field related to maritime shipping or ship launching by floating docks. |