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다분할 해석법에 의한 장형코일의 곡가공 연구

A Study of Bending Using Long Type Coil by Discrete Method

  • 이영화 (동양공업전문대학 자동화시스템과) ;
  • 장창두 (서울대학교 조선해양공학과)
  • Lee, Young-Hwa (Dept. of Automation Systems, Dong Yang Technical College) ;
  • Jang, Chang-Doo (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
  • 발행 : 2008.06.30

초록

The induction heating is more efficient for a plate bending because of its easy operation and control of working parameters, compared with the heating by a gas torch. The existing axis symmetric analysis method could neither handle initial curved plates nor be used in the optimization of coil shapes because of its limit of an axis symmetric coil shape. But the proposed method using some discrete part models and analysis processes could overcome these difficulties and show more accurate results in temperatures and deflections of flat or curved plates with initial curvature than those in the existing axis symmetric analysis method. This method is composed of the multi-disciplinary analyses such as an electro magnetic analysis, a heat transfer analysis and a deformation analysis based on inherent strain approach per each step. Traditionally, the coil shape in the induction heating is circular shape and it needs the moving process along heating lines. To overcome this, the 'Long Type Coil' with some linear parallel coils was proposed. It did not need the moving process along heating lines and reduced the heating process time. The results of experiments were compared with those of the simulation.

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참고문헌

  1. Ko, D.E., Jang, C.D., Seo, S.I. and Lee, H.W., 1999, “Realtime Simulation of Deformation due to Line Heating for Automatic Hull Forming System,” Journal of the Society of Naval Architectures of Korea, Vol. 36, No. 4, pp. 116-127
  2. 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 Architectures of Korea, Vol. 39, No. 1, pp. 82-89 https://doi.org/10.3744/SNAK.2002.39.1.082
  3. Kim, H.K., 2002, Simulator of Line Heating by High Frequency Induction Heating, Ph. D. Thesis, Seoul National University
  4. Lee, Y,H,, 2006, Development of the Induction Heating Machine and Analysis Program for a Plate Bending, Ph. D. Thesis, Seoul National University
  5. Lee, Y,H,, Ha, Y.S. and Jang, C.D., 2005, “Development of Induction Heating Simulator for the Bending of Plates with Primary Curvature,” Journal of the Society of Naval Architectures of Korea, Vol. 42, No. 3, pp. 241-248 https://doi.org/10.3744/SNAK.2005.42.3.241

피인용 문헌

  1. Simulation of Curved Surface Forming of Steel Plate by Induction Heating vol.16, pp.7, 2015, https://doi.org/10.5762/KAIS.2015.16.7.4381
  2. Design of Induction Heating Coil for Automatic Hull Forming System vol.24, pp.3, 2018, https://doi.org/10.7837/kosomes.2018.24.3.360