Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Automatic Generation of Triangular Shell Element Meshes on Mid-Surface in Shell Structure

셸 구조물의 중간면에 대한 삼각형 셸 요소망의 자동생성

  • 문연철 (한양대학교 일반대학원 기계설계학과) ;
  • 양현익 (한양대학교 기계정보경영공학부)
  • Published : 2007.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

The surface of 3D shell structure is created by using NURBS and nodes for generating finite element mesh on the surface are created by using external node offset method. In so doing the shortest distance between nodes on the top and bottom surface is searched and then the coordinates of nodes are determined by calculating the mid point of them in the middle of top and bottom surface. Triangular elements are formed on mid surface, and the average aspect ratio of the generated triangular elements are over 0.9.

Keywords

References

  1. Ho-Le, K., 1998, 'Finite Element Mesh Generation Method : A Review and Classification,' Computer Aided Design, 20, 27-38 https://doi.org/10.1016/0010-4485(88)90138-8
  2. Son, J. H. and Chae, S. W., 2004, 'Automatic Generation of Finite Element Meshes on Midsurfaces in Shell Structures,' Transactions of the KSME, A, Vol. 28, No. 10, 1517-1525 https://doi.org/10.3795/KSME-A.2004.28.10.1517
  3. Kim, D. H. and Yang, H. I., 2003, 'Automatic Quadrilateral Element Mesh Generation Using Boundary Normal Offsetting In Various Two Dimensional Objects,' Korean Society of CAD/CAM Engineers, Vol. 8, No. 4, 270-277
  4. Farin and Gerald, 1993, 'Curves and Surfaces for Computer Aided Geometric Design - A Practical Guide,' 3rd Edition, Academic Press
  5. Suh, E. K., Shim, H. B. and Kim, K. H., 1999, 'A contact Treatment Algorithm for the Trimmed NURBS Surface and Its Application to Analyses of Deep Drawing Processes,' Transactions of the KSME, A, Vol. 23, No. 10, 1750-1757
  6. Cheon, J. H. and Yang, H. I., 2000, 'Triangular Mesh Generation Algorithm for Generating Nodes and Triangular Elements Concurrently,' Korean Society of CAD/CAM Engineers, Vol. 5, No. 3, 207-214
  7. Kim, K. H. and Yang, H. I., 2004, 'Automatic Triangular Mesh Generation over B-Spline Surface Including Arbitrary Holes,' Korean Society of CAD/CAM Engineers, Vol. 9, No. 1, 1-10
  8. Kim, H. I. and Chae, S. W., 1998, 'Automatic Generation of Quadrilateral Elements on Sculptured Surfaces with Holes,' Proceedings of KSME Autumn Annual Meeting, A, 1029-1034
  9. Carvendish, J. C., 'Automatic Triangulation of Arbitrary Planar Domains for the Finite Element Method,' International Journal for Numerical Methods in Engineering, Vol. 9, 679-1974 https://doi.org/10.1002/nme.1620080402
  10. Chae, S. W. and Jeong, J. H., 1997, 'Unstructured Surface Meshing Using Operators,' Proceedings of the 6th International Meshgen Roundtable, 281-291
  11. Kim, B. O. and Yang, H. I., 2000, 'The Development of The Automatic Triangular Mesh Generation Software by Improving Lo`s Algorithm,' Korean Society of CAD/CAM Engineers, Vol. 5, No. 1, 95-101
  12. Piegl, L. and Tilter, W., 1995, 'The NURBS Book,' Springer, Germany