有限元网格自动剖分方法及其在工程中的应用

Automatic generation methods of finite element meshes and its applications in engineering

介绍了一些特殊曲面的网格自动生成方法,从有限元网格的生成规律出发给出了三次样条曲线在网格划分中具体形成的方法。利用该方法建立了汽车车身有限元模型并进行了有限元网格剖分,以该汽车车身有限元网格剖分数据为基础对汽车车身进行了动力计算,给出了前几阶振动频率和振型。

In this paper, automatic mesh generation of three -dimensional model in space is discussed and finite element models are constructed in the actual engineering situation. Typical finite element models in engineering are given emphasis： solids based on planes, rotating surface. The topological information about solid can be collected at the same time and translated into a certain formation of data file. The numerical example of the simplified bus body model is given to illustrate the application of the present method. Several orders vibration frequencies and modes are given.