Study on boundary search method for DFM mesh generation  

作　　者：Li Ri Li Fei Zhang Jianqiang Shen Fatian 

机构地区：[1]Institute of Materials Science and Technology,Hebei University,of Technology,Tianjin,China

出　　处：《China Foundry》2012年第3期231-233,共3页中国铸造（英文版）

基　　金：supported by the fund of the State Key Laboratory of Solidification Processing in NWPU (No: SKLSP201006);the National Basic Research Program of China (No: 2011CB610402)

摘　　要：The boundary mesh of the casting model was determined by direct calculation on the triangular facets extracted from the STL file of the 3D model. Then the inner and outer grids of the model were identified by the algorithm in which we named Inner Seed Grid Method. Finally, a program to automatically generate a 3D FDM mesh was compiled. In the paper, a method named Triangle Contraction Search Method (TCSM) was put forward to ensure not losing the boundary grids; while an algorithm to search inner seed grids to identify inner/outer grids of the casting model was also brought forward. Our algorithm was simple, clear and easy to construct program. Three examples for the casting mesh generation testified the validity of the program.The boundary mesh of the casting model was determined by direct calculation on the triangular facets extracted from the STL file of the 3D model, Then the inner and outer grids of the model were identified by the algorithm in which we named Inner Seed Grid Method. Finally, a program to automatically generate a 3D FDM mesh was compiled. In the paper, a method named Triangle Contraction Search Method （TCSM） was put forward to ensure not losing the boundary grids; while an algorithm to search inner seed grids to identify inner/outer grids of the casting model was also brought forward. Our algorithm was simple, clear and easy to construct program. Three examples for the casting mesh generation testified the validity of the program.

关 键 词：DFM mesh generation boundary search method triangle plane contraction search 

分 类 号：TP391.92[自动化与计算机技术—计算机应用技术]