Automatic 3D Mesh Generation for a Domain with Multiple Materials
Automatic 3D Mesh Generation for a Domain with Multiple Materials
复制标题
具有多种材料的域的自动 3D 网格生成
DOI：
10.1007/978-3-540-75103-8_21
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
C. Bajaj
中科院分区：
文献类型：
--
作者：
Y. Zhang;T. Hughes;C. Bajaj
本文描述了一种多材料域非结构化四面体和六面体网格的构造方法。在早期的工作中，我们开发了一种基于八叉树的等轮廓方法来构建单材料域的非结构化3D网格。在此基础上，我们引入了材料变化边缘的概念，并用它来识别两种或几种材料之间的界面。然后我们用一致的边界网格化每个材料区域。两种表面，即边界表面和两个不同材料区域之间的界面，被区分并网格化。通过分析材料变化边缘和内部边缘来构建四面体网格，通过分析内部网格点来构建六面体网格。最后采用边缘收缩平滑法提高四面体网格质量，并结合枕化、几何流和优化技术提高六面体网格质量。收缩集被自动定义为每个材料区域的边界。给出了几种在不同研究领域的应用结果。
This paper describes an approach to construct unstructured tetrahedral and hexahedral meshes for a domain with multiple materials. In earlier works, we developed an octree-based isocontouring method to construct unstructured 3D meshes for a single-material domain. Based on this methodology, we introduce the notion of material change edge and use it to identify the interface between two or several materials. We then mesh each material region with conforming boundaries. Two kinds of surfaces, the boundary surface and the interface between two different material regions, are distinguished and meshed. Both material change edges and interior edges are analyzed to construct tetrahedral meshes, and interior grid points are analyzed for hexahedral mesh construction. Finally the edge-contraction and smoothing method is used to improve the quality of tetrahedral meshes, and a combination of pillowing, geometric flow and optimization techniques is used for hexahedral mesh quality improvement. The shrink set is defined automatically as the boundary of each material region. Several application results in different research fields are shown.
DOI：
10.1016/j.cma.2005.02.016
发表时间：
2006-02
影响因子：
7.2
作者：
Y. Zhang;C. Bajaj
通讯作者：
Y. Zhang;C. Bajaj
DOI：
10.1016/j.cma.2004.11.026
发表时间：
2005-01-01
影响因子：
7.2
作者：
Zhang, YJ;Bajaj, C;Sohn, BS
通讯作者：
Sohn, BS