航空学报 > 2007, Vol. 28 Issue (1): 249-252

金属板料激光冷塑性弯曲的研究

张永康,张兴权,周建忠,顾永玉,杜建钧   

  1. 江苏大学  机械工程学院
  • 收稿日期:2005-09-28 修回日期:2006-03-20 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 张兴权

Research on plastic curvature of plate by laser shock waves

ZHANG Yong-kang,ZHANG Xing-quan,ZHOU Jian-zhong,GU Yong-yu,DU Jian-jun   

  1. School of Mechanical Engneering, Jiangsu University
  • Received:2005-09-28 Revised:2006-03-20 Online:2007-01-10 Published:2007-01-10
  • Contact: ZHANG Xing-quan

摘要:

利用激光冲击波来成形金属板料是塑性成形领域刚刚出现的新技术,同激光热应力成形和传统的机械喷丸成形相比,具有巨大的优势。文章在分析了成形机理的基础上,用短脉冲(ns级)的强激光(GW/cm2)对LY12CZ航空铝合金材料进行了初步的激光冲击变形实验,探讨了冲击轨迹为直线情况下,激光脉冲能量、冲击次数、板料的厚度等对板料成形量的影响,实验结果表明:板料变形量随激光能量的增大而变大,随冲击次数的增加而增加,最后趋于平缓;随板料变形厚度的增加而减小。

关键词: 激光冲击波, 板料塑性成形, 机理, 最大变形量

Abstract:

Plastic forming plate by laser shock waves is an emerging modern processing. Comparing to the tradition shot peening and laser bending based on heating effecting, it has lots of advantages. In this paper, the mechanism of forming by laser shock waves is investigated. And some preliminary experimental explorations are carried out with LY12CZ specimens shocked by a neodymium-glass laser of pulse duration 20ns to test the energy of laser, numbers of laser shot peening and thickness of specimen to affect the magnitude of deformation.

Key words: laser , shock , waves,  , plastic , forming,  , mechanism,  , the , maximum , deformation

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