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Characteristics of two-dimensional slab model and the automatic finite element mesh generation


Classification algorithm based on triangular element sides combined, can form connections within the side edges. The inside of the triangle mesh (may wish to set AC) were used for the two triangles c + language developed in the VC platform features two-dimensional slab model and finite element mesh generation system. Application process shown in Figure 4. Figure 1 is the application of the system through the interaction of the slab geometry by Figure 5 is shown in Figure 1 slab through Delau-nay triangulation of the triangle mesh obtained after the situation in Figure 5,[link widoczny dla zalogowanych], based on the combined application of classification algorithm shown in Figure 6 obtained the majority of the quadrilateral quadrilateral / triangular hybrid grid distribution. It can be seen,[link widoczny dla zalogowanych], the system and convenient, the results accurate and reliable cutting cutting cutting the wall of a Man Ken Kui j! Falling star plastic heavy plastic j-J Li Qiao three plants of a plant and then] three fish Divination Fort circle pad plastic pad falling falling I-Lung l In case the amount of these fish look Ji System Application Process Figure 4 Fig. 4Flowchartofusingthesystem6 Conclusion feature modeling technology enables rapid two-dimensional slab geometry description can be easily and integration of the finite element mesh generation, the first two Jinchao Hai et al: Characteristics of two-dimensional slab finite element modeling and automatic grid generation 45 Figure 6 triangular mesh into quadrilateral mesh Fig. 6Meshdistributionafterconversionfromtrianglestoquadrilaterals and follow-up of the slab and the CAM system to achieve seamless integration. Merging algorithm using hierarchical triangular mesh can be automatically converted most of the good quadrilateral shape. However, all the quadrilateral mesh generation is still some difficulties, need further study. References [1] Zhang Jianhua. Typical finite element mesh automatic generation methods and development. Computer-aided design and manufacturing, 1996, (2): 28 ~ 31 [2] HU Si ball. The development of finite element mesh generation method reviewed. Computer Aided Design and Computer Graphics,[link widoczny dla zalogowanych], 1997,9 (4): 15 ~ l9r3] Weidong Min. Si triangle into a quadrilateral mesh grid. Computer Aided Design and Computer Graphics. 1996,[link widoczny dla zalogowanych],8 (1): 24 ~ 28 [4] _ Factory Yongxiang constrained Delaunay triangulation and finite element mesh automatically generated. Huazhong University of Science Report, 1995,23 (6): 23 ~ 27r5 a SWStoan. AfastalgorithmforconstructingDelao-naytriangulationsintheplane. Adv. EngS. f1%, e-ate. 1987,[link widoczny dla zalogowanych],9 (1): 34 ~ 45FEATURE-BASED2 a DSHEETMETALM0DELINGANDAUT0MATICMESHGENERATIONJINZhac ~ ha [YANGYt> yingWANGYongzh [(schootofMaterialScienceandEngineering, HarbinInstituteofTechnology150001) Abstrac1. Afeature ~ hesedmodelingsystemfor2Dsheetmetalis ~ stabltshed. ApointinsertionandDelaunaytriangulationmethodareusedtorealizeautomaticmeshgenerationforsheetmeta1. Thenagrade ~ [ncorporatealgorithmisadoptedtoconverttrianglestoquadrilateralswithgoodshap ~ Inthesystem, sheetmetalmndeltngandmeshgenerationiswetlintegrate @ Also · thesystemisconvenientforfutureintegrationwithasheetmetalCAMsystem. Keywords: Feature-basedmodeling; FiniteElement ~ Delaonaytriangula6onSystemintegration

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