International Journal of Fuzzy Logic and Intelligent Systems

  • 제6권1호
  • /
  • Pages.58-63
  • /
  • 2006
  • /
  • 1598-2645(pISSN)
  • /
  • 2093-744X(eISSN)
한국지능시스템학회 (Korean Institute of Intelligent Systems)
권호 표지
DOI QR코드

DOI QR Code

Parametric Study on Bellows of Piping System Using Fuzzy Theory

  • Lee Yang-Chang (Div. of Mechanical System Design Engineering, Kyonggi University) ;
  • Lee Joon-Seong (Dept. of Mechanical Engineering, Kyonggi University)
  • 발행 : 2006.03.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

This paper describes a novel automated analysis system for bellows of piping system. An automatic finite element (FE) mesh generation technique, which is based on the fuzzy theory and computational geometry technique, is incorporated into the system, together with one of commercial FE analysis codes and one of commercial solid modelers. In this system, a geometric model, i.e. an analysis model, is first defined using a commercial solid modelers for 3-D shell structures. Node is generated if its distance from existing node points is similar to the node spacing function at the point. The node spacing function is well controlled by the fuzzy knowledge processing. The Delaunay triangulation technique is introduced as a basic tool for element generation. The triangular elements are converted to quadrilateral elements. Practical performances of the present system are demonstrated through several analysis for bellows of piping system.

키워드

참고문헌

  1. Lee, D. T. and Schachter, B. J., 'Two Algorithms for Constructing a Delaunay Triangulation', International Journal of Computer and Information Sciences, Vol. 9, No.3, pp. 219-242, 1980 https://doi.org/10.1007/BF00977785
  2. Buratynski, E. K., 'Fully Automatic Three- Dimensional Mesh Generator for Complex Geometries', International Journal for Numerical Methods in Engineering, Vol. 30, pp.931-952, 1990
  3. Sezer, L. and Zeid, I., 'Automatic Quadrilateral/Triangular Free-Form Mesh Generation For Planar Regions', International Journal for Numerical Methods in Engineering, Vol. 32, pp. 1441-1483, 1991 https://doi.org/10.1002/nme.1620320705
  4. J.S. Lee, 'Development of High-Performance FEM Modeling System Based on Fuzzy Knowledge Processing', Int. J. of Fuzzy Logic and Intelligent Systems, Vol. 4, No.2, pp. 193- 198, 2004 https://doi.org/10.5391/IJFIS.2004.4.2.193
  5. Y.C. Lee, J.S. Lee, Y.J.Choi and N.Y. Kim, 'Automatic Mesh Generation System for FEM Modeling Using Fuzzy Theory', J. of Fuzzy Logic and Intelligent Systems, Vol. 15, No.3, pp. 343-348, 2005 https://doi.org/10.5391/JKIIS.2005.15.3.343
  6. J.S. Lee. 'Automated CAE System for ThreeDimensional Complex Geometry', Doctoral Dissertation, Faculty of Eng., The University of Tokyo, 1995
  7. Chiyokura, H., Solid Modeling with Designbase : Theory and Implementation, Addition-Wesley, 1988
  8. Asano, T., 'Practical Use of Bucketing Techniques in Computational Geometry', Computational Geometry, pp. 153-195, North- Holland, 1985