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Volume 25 Issue 1
Sep.  2013
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Citation:
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Study on buckling mechanism of laser bending of the sheet metal

  • 1.

    Department of Physics, Yunnan University, Kunming, 650091

  • 2.

    Shandong University of Technology, Jinan, 250061

  • Received Date: 1999-10-29
    Accepted Date: 2000-03-16
  • Three laser bending mechanisms,temperature mechanism,buckling mechanism and upsetting mechanism,are introduced.After being scanned,the sheet that isn't pre-bent can still obtain the bending towards the laser beam.Aiming at this phenomenon,temperature fields and strain fields in laser bending are numerically analyzed by finite element method,it is preserted that its forming mechanism still belongs to buckling mechanism,and the reason is explained.The relationship between bending angles and scanning velocity of the laser beam is studied numerically and experimentally.
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    Geiger M,Vollertsen F. CIRP Annals,1994;42(1):301～304
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    Geiger M.CIRP Annals,1994;43(2):563～570
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    Arnet H,Vollertsen F.J Engineering Manufacture,1995;209:433～442
    [4] 王秀风,王秀彦,林道盛.锻压机械,1999;34(3):8～10
    [5] 束得林.金属力学性能.北京:机械工业出版社,1987
    [6] 马庆芳,方荣生.实用热物理性质手册.北京:中国农业机械出版社,1986
    [7] 杨世铭.传热学.北京:高等教育出版社,1987
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Study on buckling mechanism of laser bending of the sheet metal

  • 1. Department of Physics, Yunnan University, Kunming, 650091
  • 2. Shandong University of Technology, Jinan, 250061
  • Received Date: 1999-10-29
  • Accepted Date: 2000-03-16
  • Available Online: 2001-01-25

Abstract: Three laser bending mechanisms,temperature mechanism,buckling mechanism and upsetting mechanism,are introduced.After being scanned,the sheet that isn't pre-bent can still obtain the bending towards the laser beam.Aiming at this phenomenon,temperature fields and strain fields in laser bending are numerically analyzed by finite element method,it is preserted that its forming mechanism still belongs to buckling mechanism,and the reason is explained.The relationship between bending angles and scanning velocity of the laser beam is studied numerically and experimentally.

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