Application of Grid-Based Approach for Auto Mesh Generation of Vacuum Chamber

Abstract:

A seamless analysis of complex geometry is one of greatly interesting topic. However, there are still gaps between the industrial applications and fundamental academic studies owing to time consuming modeling process. To resolve this problem, an auto mesh generation program based on grid-based approach has been developed for IT-product in the present study. At first, base mesh and skin mesh are generated using the information of entities which extracted from IGES file. Secondly the provisional core mesh with rugged boundary geometry is constructed by superimposing the skin mesh as well as the base mesh generated from the CAD model. Finally, the positions of boundary nodes are adjusted to make a qualified mesh by adapting node modification and smoothing techniques. Also, for the sake of verification of mesh quality, the hexahedral auto mesh constructed by the program is compared with the corresponding tetrahedral free mesh and hexahedral mapped mesh through static finite element analyses. Thereby, it is anticipated that the grid-based approach can be used as a promising pre-processor for integrity evaluation of various IT-products.

• Periodical: Key Engineering Materials (Volumes 306-308)
• Pages: 631-636
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.306-308.631
• Online since: March 2006
• Authors: Young Jae Park, H.K. Kim, Yoon Suk Chang, Jae Boong Choi, Young Jin Kim
• Keywords: Auto Mesh Generation, Base Mesh, Grid-Based Approach, Seamless Analysis, Skin Mesh, Vacuum Chamber

References

[1] K. Ho-Le: Finite Element Mesh Generation Methods: a review and classification, Computer Aided Design, Vol. 20 (1998) pp.27-38.

DOI: 10.1016/0010-4485(88)90138-8

[2] M.S. Shephard, K.R. Grice, J.A. Lo and W.J. Schroeder: Trends in Automatic Three-dimension Mesh Generation, Computers and Structures, Vol. 30 (1988) pp.421-429.

DOI: 10.1016/0045-7949(88)90248-9

[3] P.L. George: Automatic Mesh Generation (Wiley, New York, 1991).

[4] G. Yagawa and T. Furukawa: Recent Developments of free mesh method, International Journal for Numerical Methods in Engineering, Vol. 47 (2000) pp.1419-1443.

DOI: 10.1002/(sici)1097-0207(20000320)47:8<1419::aid-nme837>3.0.co;2-e

[5] Z.J. Cendes, D. Shenton and H. Shahnasser: Magnetic Field Computation Using Delaunay Triangulation and Complementary Finite Element Method, IEEE Trans. Magazine, Vol. MAG-19, No. 6 (1983).

DOI: 10.1109/tmag.1983.1062841

[6] M.S. Shephard and M.K. Georges: Automatic Three-dimensional Mesh Generation by the Finite Octree Technique, International Journal for Numerical Methods in Engineering, Vol. 32 (1991) pp.709-749.

DOI: 10.1002/nme.1620320406

[7] M.S. Shephard, F. Guerinoni, J.E. Flaherty, R.A. Ludwig and P.L. Baehmann: Adaptive Solution of the Euler Equations Using Finite Quadtree and Octree grids, Computers and Structures, Vol. 30 (1988) pp.327-336.

DOI: 10.1016/0045-7949(88)90238-6

[8] P.J. Frey and P.L. George: Mesh Generation Application to Finite Elements, (HERMES Science, UK, 2000).

[9] R. Kopp, K. Karhausen and R. Schneiders: Application of FEM to Prediction of Microstructure in Hot Forming of Metals, Proceedings of the 4 th ICTP, (1993) pp.1203-1211.

[10] R. Taghavi: Automatic Mesh Generation from CAD on Vector-parallel and Massively Parallel Supercomputers, Cray Research Inc. (1994).

[11] A.E. Tekkaya and S. Kavakli: 3-D Simulation of Metal Forming Processes with Automatic Mesh Generation, Steel Research, Vol. 66 (1995) pp.377-383.

DOI: 10.1002/srin.199501141

[12] J.H. Yoon and D.Y. Yang: Rigid-plastic Finite Element Analysis of Three-dimensional Forging by considering Friction on Continuous Curved Dies with Initial Guess Generation, International Journal of Mechanical Sciences, Vol. 30 (1988) pp.887-898.

DOI: 10.1016/0020-7403(88)90072-0