基于Hypermesh的复杂岩质边坡实体混合单元剖分

复杂岩质边坡的数值分析往往受到地形条件、地质构造及加固措施等的限制,难以建立较为规则的网格模型,单纯的四面体网格往往会增加计算时间,影响计算精度,因此,提高以六面体为主的混合单元剖分的灵活性及局部单元手动修改的能力成为一种改善上述局限的有效方法。文章以某电站坝肩高陡岩质边坡为例,阐述利用Hypermesh软件对三维边坡进行实体网格剖分的思路,并提出薄层单元及flac^(3D)七节点退化单元的生成方法。

The numerical analysis of complex rock slope is often limited by the terrain conditions, geological structure and rein - forcement measures, so it is difficult to establish a more regular mesh model. The simple tetrahedron grid often increases the calcula-tion time and affects the calculation accuracy. It is an effective method to improve the flexibility of the hexahedron hybrid unit divi-sion and the ability to modify the local unit manually. Taking the high and steep rock slope of dam abutment of a certain power station as an example, this paper expounds the idea of using Hypermesh software to mesh 3D slope, and puts forward the method of generating thin layer element and flac3D seven-node degradation element.