船舶有限元网格自动生成技术研究

Research on ship FEM generation techniques

在进行船舶有限元分析时,先在CAD软件中进行船舶模型设计,然后再将该模型导入到CAE软件中进行有限元分析求解是一种非常实用的方法。但这一方法需要将CAD模型转换为CAE有限元网格模型,它包括网格的自动划分、网格修补和网格细化。本文根据船舶有限元分析的特点,介绍了网格自动划分的主要算法,提出了一种改进的铺设算法以实现船舶有限元网格的自动生成。并分别讨论了网格修补和网格细化自动实现的思路。

In the FEA（Finite Element Analysis） for ships, it is a practical method to design geometry model in CAD software,complete FEA in general CAE software. which needs discretize the continuous model in CAD to FEM（Finite Element Model）, itincludes automatic mesh generation, mesh mending and mesh refinement. According to the FEA for ships, common automatic meshgeneration methods are introduced in this paper, and a new automatic mesh generation algorithm based on paving is presented bywhich the ship CAD model is auto meshed. Then the mesh mending and mesh refinement are also discussed.