摘要
提出水工渗流有限元网格剖分的控制断面节点对连法,通过布置适当的控制断面,利用VBA对AutoCAD进行二次开发,生成控制断面的二维网格信息,将相邻控制断面相应节点对连并通过插值实现三维网格的自动剖分。该法较好地解决了由计算对象边界复杂、材料分区多变带来的有限元三维网格自动剖分的困难。算例表明,该法运用简单、适应性强、效率高。
By layout of proper control sections, 2D meshes for control section are generated by secondary development of AutoCAD with VBA. Three-dimensional meshes are auto-generated by joining the corresponding nodes in adjoining control sections, and the interpolation method is employed to make 3D meshes denser. The method overcomes the difficulty induced by complicated boundary and changeable materials of calculated objectives in auto-generation of the 3D FEM meshes. Two engineering applications show that the method is of high applicability and efficiency and is convenient in operation.
出处
《水利水电科技进展》
CSCD
北大核心
2006年第5期48-50,共3页
Advances in Science and Technology of Water Resources
