船体大变形对轴系校中的影响

在对轴系校中的影响因素研究中,国内外研究者大多将精力集中在轴承热位移、油膜刚度变化等方面,随着船舶的大型化,船体大变形已经成了影响轴系校中的主要因素之一。文章依据有限元方法的基本原理推导了适合轴系校中的计算公式,并利用Visual Basic编写了对应的计算软件,结合船体变形数据,分析了船体变形对轴系校中的影响程度,为船舶轴系校中计算及检验提供了参考。

Research on effective ship hull deformation on shaft alignment

The FEM(Finite Element Method) is one of the methods of ship shaft alignment which is widely used. In the research of the influence of shaft alignment, thermal deformation of bearing, rigidity of bearing oli film and other factors have been widely discussed. With the appearance of large ship, hull deformation becomes one of the main factors. It is necessary that taking hull deformation into shaft alignment. This paper deduces the formulas of shaft alignment with FEM and develops the program with Visual Basic. The influence on shaft alignment of ship hull deformation is analyzed, which provides reference to the calculation and survey of shaft alignment.