| 具有内部特征约束的四边形网格生成方法 |
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| 引用本文： | 马新武,王芳,赵国群.具有内部特征约束的四边形网格生成方法[J].计算力学学报,2012,29(6):855-860,900. |
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| 作者姓名： | 马新武 王芳 赵国群 |
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| 作者单位： | 1. 山东大学材料液固结构演变与加工教育部重点实验室,济南,250061
2. 山东建筑大学机电工程学院,济南,250101 |
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| 基金项目： | 国家自然科学基金(50905098,50875155); 教育部"长江学者和创新团队发展计划" 创新团队(IRT0931)资助项目. |
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| 摘 要： | 提出一种具有内部特征约束的四边形网格自动生成方法,可以处理内部具有孔洞、约束线、约束点以及密度线、密度点等特征约束,满足数值分析中对网格生成的特殊要求。以区域分解法为基础,提出了确定最佳切割线的方法以及在切割线上生成过渡均匀网格节点的方法;将约束线、约束点以及密度线、密度点作为面积为零的孔洞,提出了对特征约束的处理方法;针对特征约束分隔区域的情况,提出了自动确定各子区域边界的方法。基于本文提出的方法已开发出具有特征约束的四边形网格自动生成程序,并成功应用于洪水分析系统和楼面设计分析系统。
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| 关 键 词： | 网格生成 四边形网格 特征约束 区域分解法 |
| 收稿时间： | 2011/7/11 0:00:00 |
| 修稿时间： | 2011/12/20 0:00:00 |
An algorithm for quadrilateral mesh generation with internal feature constraints |
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| MA Xin-wu,WANG Fang and ZHAO Guo-qun.An algorithm for quadrilateral mesh generation with internal feature constraints[J].Chinese Journal of Computational Mechanics,2012,29(6):855-860,900. |
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| Authors: | MA Xin-wu WANG Fang and ZHAO Guo-qun |
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| Institution: | Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University,Jinan 250061,China;School of Mechanical and Electronic Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University,Jinan 250061,China |
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| Abstract: | An algorithm for quadrilateral mesh generation with internal feature constraints is presented in this paper.It can deal with all kinds of feature constraints such as internal holes,constraint lines,constraint points,density lines and points etc.and satisfy the special requirements of mesh generation for numerical analysis.The method that determines the best cutting line and generates smooth transition nodes on it is given in this paper based on domain division algorithm.The method of dealing with feature constraints is presented by regarding constraint lines and points and density lines and points as internal holes with zero area.For the condition that feature constraints separate the domain into sub-domains,the automatic determination method of sub-domain boundaries is presented.The program of quadrilateral mesh generation has been developed based on the algorithm in this paper and successfully applied to the flood analysis system and floor design and analysis system. |
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| Keywords: | mesh generation quadrilateral mesh feature constraints domain division algorithm |
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