| METHOD FOR ADAPTIVE MESH GENERATION BASED ON GEOMETRICAL FEATURES OF 3D SOLID |
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| 引用本文： | HUANG Xiaodong DU Qungui College of Automotive Engineering,South China University of Technology,Guangzhou 510640,China YE Bangyan College of Mechanical Engineering,South China University of Technology,Guangzhou 510640,China. METHOD FOR ADAPTIVE MESH GENERATION BASED ON GEOMETRICAL FEATURES OF 3D SOLID[J]. 机械工程学报(英文版), 2006, 19(3): 330-334 |
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| 作者姓名： | HUANG Xiaodong DU Qungui College of Automotive Engineering South China University of Technology Guangzhou 510640 China YE Bangyan College of Mechanical Engineering South China University of Technology Guangzhou 510640 China |
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| 作者单位： | HUANG Xiaodong DU Qungui College of Automotive Engineering，South China University of Technology，Guangzhou 510640，China YE Bangyan College of Mechanical Engineering，South China University of Technology，Guangzhou 510640，China |
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| 基金项目： | This project is supported by Provincial Project Foundation of Science and Technology of Guangdong, China(No.2002104040101). |
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| 摘 要： | In order to provide a guidance to specify the element size dynamically during adaptive finite element mesh generation, adaptive criteria are firstly defined according to the relationships between the geometrical features and the elements of 3D solid. Various modes based on different datum geometrical elements, such as vertex, curve, surface, and so on, are then designed for generating local refined mesh. With the guidance of the defined criteria, different modes are automatically selected to apply on the appropriate datum objects to program the element size in the local special areas. As a result, the control information of element size is successfully programmed covering the entire domain based on the geometrical features of 3D solid. A new algorithm based on Delaunay triangulation is then developed for generating 3D adaptive finite element mesh, in which the element size is dynamically specified to catch the geometrical features and suitable tetrahedron facets are selected to locate interior nodes continuously. As a result, adaptive mesh with good-quality elements is generated. Examples show that the proposed method can be successfully applied to adaptive finite element mesh automatic generation based on the geometrical features of 3D solid.
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| 关 键 词： | 适应网格生成 几何特性 德洛内三角测量 有限元法 |
METHOD FOR ADAPTIVE MESH GENERATION BASED ON GEOMETRICAL FEATURES OF 3D SOLID |
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| HUANG Xiaodong DU Qungui YE Bangyan. METHOD FOR ADAPTIVE MESH GENERATION BASED ON GEOMETRICAL FEATURES OF 3D SOLID[J]. Chinese Journal of Mechanical Engineering, 2006, 19(3): 330-334 |
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| Authors: | HUANG Xiaodong DU Qungui YE Bangyan |
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| Affiliation: | [1]College of Automotive Engineering,South China University of Technology, Guangzhou 510640, China [2]College of Mechanical Engineering,South China University of Technology, Guangzhou 510640, China |
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| Abstract: | In order to provide a guidance to specify the element size dynamically during adaptive finite element mesh generation, adaptive criteria are firstly defined according to the relationships between the geometrical features and the elements of 3D solid. Various modes based on different datum geometrical elements, such as vertex, curve, surface, and so on, are then designed for generating local refined mesh. With the guidance of the defined criteria, different modes are automatically selected to apply on the appropriate datum objects to program the element size in the local special areas. As a result, the control information of element size is successfully programmed covering the entire domain based on the geometrical features of 3D solid. A new algorithm based on Delaunay triangulation is then developed for generating 3D adaptive finite element mesh, in which the element size is dynamically specified to catch the geometrical features and suitable tetrahedron facets are selected to locate interior nodes continuously. As a result, adaptive mesh with good-quality elements is generated. Examples show that the proposed method can be successfully applied to adaptive finite element mesh automatic generation based on the geometrical features of 3D solid. |
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| Keywords: | Adaptive mesh generation Geometrical features Delaunay triangulation Finite element method |
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