| 李华,李笑牛.一种全四边形网格生成方法——改进模板法[J].计算力学学报,2002,19(1):16~ |
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| 一种全四边形网格生成方法——改进模板法 |
| A method for mesh generation of all quadrilateral finite elements-improvedpattern module''''s method |
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| DOI：10.7511/jslx20021005 |
| 中文关键词: 网格自动剖分 全四边形单元 模板法 有限元 网格生成算法 |
| 英文关键词:automatic mesh generation,quadrilateral finite elements,pattern module's method |
| 基金项目:国家自然科学基金 ( 1980 2 0 0 5 )，吉林省科委项目( 19980 5 38-0 1)，辽宁省科学基金 ( 9910 2 0 0 2 0 1)资助 |
| 李华 李笑牛 |
[1]大连理工大学工程力学系，大连116024 [2]吉林大学(南岭校区)
力学系，长春130025 |
| 摘要点击次数: 1611 |
| 全文下载次数: 8 |
| 中文摘要: |
| 首先对全四边形单元网格自动剖分算法中的模板法进行了探讨，并提出了相应的改进方法。在此基础上提出了一种新的全四边形单元网格自动生成方法。该方法允许在两个方向上存在网格疏密过渡，并可以提高单元的密度要求自动计算亲单元每条边上的结点数，有效地对局部实施加密处理。 |
| 英文摘要: |
| An improved method of generating a graded all quadrilateral mesh in an arbitrary domain has been presented in this paper. The basic strategy of the method is to develop a pattern module for generating a graded all quadrilateral mesh in a parent square. The graded mesh in the parent domain is then mapped to the physical domain. The algorithm of improved pattern module's method is composed of the following three steps:(1) Dividing the discretized region into a number of four sided zones, called super-elements, as geometrical and material variations, then transferring the super-element into a square in parametric space by a transfinite mapping equation; (2) Generating the meshes in the square are according to the requirement of the number of elements; (3) Transferring the mesh in the parametric space into the physical space and smoothing the mesh. Compared with other approaches, the present method has more flexibility and efficiency. |
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