소성∙가공 (Transactions of Materials Processing)

  • 제12권5호
  • /
  • Pages.440-448
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  • 2003
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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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레이저 용접 판재의 U-벤딩시 스프링백 특성에 관한 연구

Springback Characteristics of Tailor-Welded Strips in U-bending

  • 장성호 (성균관대학교 기계공학부 대학원) ;
  • 신장모 (성균관대학교 기계공학부 대학원) ;
  • 서대교 (성균관대학교 기계공학부)
  • 발행 : 2003.08.01
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초록

Sheet or plate bending is one of the most important industrial metal forming processes. Considerable attention has been focused on gaining a better understanding of bending characteristics. One of defaults in bending process is the springback. In this study, the springback characteristics of tailor-welded strips in U-bending process was investigated. Furthermore, effect of the process variables such as the geometry of the tools, thickness combination of workpiece, and welding prcoessing on springback were experimentally clarified. First, tailor-welded strips are joined by the laser welding process and consisted of two types of thickness combinations of the SCPl sheet, $0.8t{\times}1.2t$ and $0.8t{\times}1.6t$ to investigate the effect of different thickness combination on the springback. Secondly, two different directionly welded strips, one was welded along the centerline of the strip-width and the other was along the centerline of strip-length, were adopted to compare the effects of the location of weld line on the springback. Some cases of the experimental results were compared to the results simulated by using a commercial FEM code, PAM-STAMP and the theoretical results using the springback formula as well.

키워드

참고문헌

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