소성∙가공 (Transactions of Materials Processing)

  • 제11권5호
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  • Pages.394-404
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  • 2002
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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3차원 박판형성 공정 유한요소해석용 드로우비드 모델

Drawbead Model for 3-Dimensional Finite Element Analysis of Sheet Metal Forming Processess

  • 금영탁 (한양대학교 기계공학부) ;
  • 김준환 (한양대학교 일반대학원) ;
  • 차지혜 (한양대학교 일반대학원)
  • 발행 : 2002.09.01
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초록

The drawbead model for a three-dimensional a finite element analysis of sheet metal forming processes is developed. The mathematical models of the basic drawbeads like circular drawbead, stepped drawbead, and squared drawbaed are first derived using the bending theory, belt-pulley equation, and Coulomb friction law. Next, the experiments for finding the drawing characteristics of the drawbead are performed. Based on mathematical models and drawing test results, expert models of basic drawbeads are then developed employing a linear multiple regression method. For the expert models of combined drawbeads such as the double circular drawbead, double stepped drawbead, circular-and-stepped drawbead, etc., those of the basic drawbeads are summed. Finally, in order to verify the expert models developed, the drawing characteristics calculated by the expert models of the double circular drawbead and circular-and-stepped drawbead are compared with those obtained from the experiments. The predictions by expert models agree well with the measurements by experiments.

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참고문헌

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