The Object Element Method Based on the Tetrahedral Element to Calculate Hydrostatic Properties of the Jacket
Xiao Liu · Guangdong Shipbuilding · 2010
The object element method appeared in recent years has big advantages in computing hydrostatic properties of the floating object with complicated shape. This paper points out the problems in the intersection algorithm of the water plane and the object element. It also presents the object element method based on the tetrahedral element. The jacket can be divided into simple object elements, such as hexahedra, columns and triangle prisms. These object elements can be disassembled into more basic tetrahedral elements. After analyzing the relationship between the tetrahedron and the water plane, the individual element’s displacement and floating center can be evaluated. So the hydrostatic properties of the whole jacket can be computed by summing up all the parameters of the tetrahedral elements..