三维连续金属_陶瓷复合材料六面体有限元网格自动生成算法.doc

文档介绍：
三维连续金属/陶瓷复合材料六面体有限
元网格自动生成算法
张洪梅,范群波,李国举
(北京理工大学材料学院,冲击环境材料技术重点实验室,北京 100081)
摘要:三维连续复合材料有限元几何模型的构建是进行微观力学研究的基础和难点。针对其
几何拓扑结构特征,采用三维断层扫描设备 Micro-CT 和 Simpleware 图像处理软件得到复合
材料三维微观组织实体模型,数据选用 STL 文件格式存储;基于实体模型的表面曲率和局
部厚度小特征建立网格的加密信息场,采用栅格法自动生成金属相的全六面体有限元网格;
提出互补填充方法自动生成陶瓷相的全六面体有限元网格,实现三维连续金属/陶瓷复合材
料的有限元几何建模,并应用于有限元数值模拟,分析其微观力学性能。
关键词:计算机应用;复合材料;有限元;三维;网格生成
中图分类号:TP391; TB333
文献标志码:A
Automatic generation of hexahedral element mesh for
co-continuous metal/posites
Zhang Hongmei, Fan Qunbo, Li Guoju
(National Key Laboratory of Science and Technology on Materials under Shock and Impact,
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081)
Abstract: Construction of geometrical models by finite element method is the fundamental and key
work for C4 (co-continuous posites) in micro-mechanical research plex topological
structure. Three-dimensional microstructure model is set up based on digital image-based modeling
technique together with the image processing software Simpleware, with storage data in the context of
STL file. Then the finite element refinement field is constructed based on the model surface curvature
and thickness properties. After the metal hexahedral element mesh is generated automatically using
grid-based method, plement filling method is proposed to obtain the ceramic hexahedral element
mesh for the p