대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제46권6호
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  • Pages.675-687
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  • 2009
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  • 1225-1143(pISSN)
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  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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곡가공 프로세스를 고려한 곡판 분류 알고리즘

An Algorithm of Curved Hull Plates Classification for the Curved Hull Plates Forming Process

  • 노재규 (서울대학교 해양시스템공학연구소) ;
  • 신종계 (서울대학교 조선해양공학과)
  • Noh, Ja-Ckyou (Research Institute of Marine Systems Engineering, Seoul National University) ;
  • Shin, Jong-Gye (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
  • 발행 : 2009.12.20
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초록

In general, the forming process of the curved hull plates consists of sub tasks, such as roll bending, line heating, and triangle heating. In order to complement the automated curved hull forming system, it is necessary to develop an algorithm to classify the curved hull plates of a ship into standard shapes with respect to the techniques of forming task, such as the roll bending, the line heating, and the triangle heating. In this paper, the curved hull plates are classified by four standard shapes and the combination of them, or saddle, convex, flat, cylindrical shape, and the combination of them, that are related to the forming tasks necessary to form the shapes. In preprocessing, the Gaussian curvature and the mean curvature at the mid-point of a mesh of modeling surface by Coon's patch are calculated. Then the nearest neighbor method to classify the input plate type is applied. Tests to verify the developed algorithm with sample plates of a real ship data have been performed.

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참고문헌

  1. Besl, P.J. and Jain, R.C., 1986, “Invariant Surface Characteristics for 3D Object Recognition in Range Images,” Computer Vision, Graphics, and Image Processing, Vol. 33, pp. 33-80. https://doi.org/10.1016/0734-189X(86)90220-3
  2. Besl, P.J. and Jain, R.C., 1988, “Segmentation Through Variable-order Surface Fitting,” IEEE Transaction Pattern Analysis and Machine Intelligence, Vol. 10, Issue 2, pp. 167-192. https://doi.org/10.1109/34.3881
  3. Blanchard B.S. and Fabrycky, W.J., 2006, Systems Engineering and Analysis, Pearson Prentice Hall, Upper Saddle River, New Jersey
  4. Coons, S.A., 1967, “Surfaces for Computer- Aided Design of Space Forms,” Technical Report MAC-TR 44 MIT, Cambridge, MA, USA.
  5. Dasarathy, B.V., 1991, Nearest Neighbor (NN) Norms : NN Pattern Classification Techniques, IEEE Computer Society Press, Los Alamitos, Calif.
  6. Ishiyama, M. and Tango, Y., 2000, “Advanced Line-Heating Process for Hull-Steel Assembly,” Journal of Ship Production, Vol. 16, No. 2, pp. 121-132.
  7. Jang, C.D., Ha, Y.S., Ko, D.E. and Moon, S.C., 2002, “Determination of Inherent Strain Regions to Estimate Plate Deformation by Line Heating,” Journal of the Society of Naval Architects of Korea, Vol. 39, No. 1, pp. 82-89. https://doi.org/10.3744/SNAK.2002.39.1.082
  8. Jang, C.D., Ko, D.E. and Ha, Y.S., 2008, “Simulation of Plate Deformation due to Triangle Heating Using Inherent Strain Method,” Journal of the Society of Naval Architects of Korea, Vol. 45, No. 6, pp. 703-709. https://doi.org/10.3744/SNAK.2008.45.6.703
  9. Kang, J.G., Lee, J.H. and Shin, J.G., 2000, “Numerical Analysis of Induction Heating for the Application of Line Heating,” Journal of the Society of Naval Architects of Korea, Vol. 37, No. 3, pp. 110-121.
  10. Kim, J., Park, J.S., Jo, Y.H., Shin, J.G., Kim, W.D. and Ko, K.H., 2008, “A Study of 3D Design Data Extraction for Thermal Forming Information,” Journal of Ship and Ocean Technology, Vol. 12, no. 3, pp. 1-13.
  11. Kim, S.Y., Moon, B.Y., Kim, D.E. and Shin, S.C., 2004, “Automation of Hull Plates Classification in Ship Design System using Neural Network Method,” Mechanical Systems and Signal Processing, Vol. 20, No. 2, pp. 493-504. https://doi.org/10.1016/j.ymssp.2004.06.008
  12. Lee, C. and Landgrebe, D.A., 1993, “Feature Extraction Based on Decision Boundaries,” IEEE Transaction on Pattern Analysis and Machine Intelligence, Vol. 15, No. 4. pp. ?-?. https://doi.org/10.1109/34.206958
  13. Lee, J.H. and Shin, J.G., 2002, “Relations between Input Parameters and Residual Deformation in Line Heating Process using Finite Element Analysis and Multi-Variate Analysis,” Journal of the Society of Naval Architects of Korea, Vol. 39, No. 2, pp. 69-80 https://doi.org/10.3744/SNAK.2002.39.2.069
  14. Lee, J.S., 2003, “Development of Numerical Control System for Plate Forming Automation,” Journal of Ocean Engineering and Technology, Vol. 17, No. 1, pp. 72-79.
  15. Ryu, C.H., 2002, Consistent Algorithm for Unfolded Flat Shape of Curved Ship's Hull Shells by Minimizing Strain Energy, Ph.D. Dissertation, Seoul National University.
  16. Shin, J.G., 1992, “A Two-Dimensional Simulator for Plate Forming by Line Heating,” Journal of the Society of Naval Architects of Korea, Vol. 29, No. 1, pp. 191-200.
  17. Shin, J.G., Ryu, C.H., Lee, J.H. and Kim, W.D., 2003, “User-Friendly, Advanced Line Heating Automation for Accurate Plate Forming,” Journal of Ship Production, Vol. 19, No. 1, pp. 8-15.
  18. Shin, J.G., Ryu, C.H. and Nam, J.H., 2004, “A Comprehensive Line-Heating Algorithm for Automatic Formation of Curved Shell Plates,” Journal of Ship Production, Vol. 29, No. 2, pp. 69-78.
  19. Yun, D.K, Shin, J.G. and Ryu, C.H., 1999, “A Determination of Approximated Cylindrical Surfaces of Doubly Curved Surfaces for the Least Line Heating,” Journal of the Society of Naval Architects of Korea, Vol. 36, No. 3, pp.134-143.

피인용 문헌

  1. A Study on Classification Algorithm of Arbitrary Polygon Curved Hull Plates for the Curved Hull Plates Forming vol.51, pp.4, 2014, https://doi.org/10.3744/SNAK.2014.51.4.342
  2. Curvature Region Analysis for Application of Plates Forming vol.52, pp.1, 2015, https://doi.org/10.3744/SNAK.2015.52.1.70