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边界约束条件对薄板激光喷丸诱导残余应力和塑性变形的影响

黄志伟,  张兴权,  章艳,  裴善报,  黄志来,  陈彬

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文章导航 > 红外与激光工程  > 2017 >  46(8): 806009-0806009(8)
黄志伟, 张兴权, 章艳, 裴善报, 黄志来, 陈彬. 边界约束条件对薄板激光喷丸诱导残余应力和塑性变形的影响[J]. 红外与激光工程, 2017, 46(8): 806009-0806009(8). doi: 10.3788/IRLA201746.0806009
引用本文: 黄志伟, 张兴权, 章艳, 裴善报, 黄志来, 陈彬. 边界约束条件对薄板激光喷丸诱导残余应力和塑性变形的影响[J]. 红外与激光工程, 2017, 46(8): 806009-0806009(8). doi: 10.3788/IRLA201746.0806009
shu
Huang Zhiwei, Zhang Xingquan, Zhang Yan, Pei Shanbao, Huang Zhilai, Chen Bin. Effect of boundary constraint conditions of thin plate on residual stresses and plastic deformation induced by laser shock peening[J]. Infrared and Laser Engineering, 2017, 46(8): 806009-0806009(8). doi: 10.3788/IRLA201746.0806009
Citation: Huang Zhiwei, Zhang Xingquan, Zhang Yan, Pei Shanbao, Huang Zhilai, Chen Bin. Effect of boundary constraint conditions of thin plate on residual stresses and plastic deformation induced by laser shock peening[J]. Infrared and Laser Engineering, 2017, 46(8): 806009-0806009(8). doi: 10.3788/IRLA201746.0806009
shu

边界约束条件对薄板激光喷丸诱导残余应力和塑性变形的影响

doi: 10.3788/IRLA201746.0806009
  • 1.

    安徽工业大学 机械工程学院,安徽 马鞍山 243032;

  • 2.

    安徽工业大学 管理科学与工程学院,安徽 马鞍山 243032

基金项目: 

国家自然科学基金（51675002，51175002）;安徽省自然科学基金（1708085ME110）;安徽工业大学校青年教师科研基金（QZ201518）;安徽工业大学研究生创新研究基金（2015043）

详细信息
    作者简介:

    黄志伟(1993-),男,硕士生,主要从事激光冲击强化等方面的研究。Email:zhiwei10270820@163.com

  • 中图分类号: TN249

Effect of boundary constraint conditions of thin plate on residual stresses and plastic deformation induced by laser shock peening

  • 1.

    School of Mechanical Engineering,Anhui University of Technology,Ma'anshan 243032,China;

  • 2.

    School of Management Science and Engineering,Anhui University of Technology,Ma'anshan 243032,China

  • 摘要: 为研究不同边界约束条件对薄板多点激光喷丸诱导残余应力和塑性变形的影响，采用数值模拟和试验结合的方法对7075铝合金薄板激光喷丸处理进行研究，对比分析了板料在底部全约束和两端夹持两种边界约束条件下的变形形貌和残余应力分布。结果表明：激光喷丸后，板料冲击区域均产生微凹坑；底部全约束的板料经激光喷丸后，未发生整体变形，仍然保持平整状态，而两端夹持的薄板喷丸区域发生了整体向上的凸起变形。两种边界约束条件下，最大残余压应力均出现在板料的冲击表面；底部全约束时的最大残余压应力为299.0 MPa，大于板料两端夹持时的251.6 MPa。在厚度方向上，其残余应力分布也存在着明显差异，底部全约束时，厚度方向上的残余应力分布形式为压应力-拉应力，而两端夹持时的分布形式为压应力-拉应力-压应力。
    Abstract: The numerical simulations and experiments were employed to investigate the effect of boundary constraint conditions of thin plate on residual stresses and plastic deformation induced by laser shock peening. Two boundary conditions, bottom fully constrained and both ends clamped, were used to compare residual stresses distribution and deformation morphology of 7075 aluminum plates after impacted by multiple laser shock peening. The results show that micro-dents were generated in impacted regions of both cases after treated by laser shock peening. The plate still kept flat without cross-sectional deformation when its bottom surface was fully constrained, while the overall upward convex deformation was produced in the impacted region of plate with both ends clamped. Moreover, the maximum compressive residual stresses existed on the surface of both cases, which was 299.0 MPa in the plate with bottom fully constrained and 251.6 MPa in the other case. Different styles of residual stresses field are also found in the thickness direction. The residual stresses from the impacted surface to the bottom was compressive residual stresses-tensile residual stresses in the plate with bottom fully constrained, while it was compressive residual stresses-tensile residual stresses-compressive residual stresses in the plate with both ends clamped.
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  • 收稿日期:  2016-12-06
  • 修回日期:  2017-01-09
  • 刊出日期:  2017-08-25

边界约束条件对薄板激光喷丸诱导残余应力和塑性变形的影响

doi: 10.3788/IRLA201746.0806009
  • 1. 安徽工业大学 机械工程学院,安徽 马鞍山 243032;
  • 2. 安徽工业大学 管理科学与工程学院,安徽 马鞍山 243032
    • 作者简介:

    黄志伟(1993-),男,硕士生,主要从事激光冲击强化等方面的研究。Email:zhiwei10270820@163.com

  • 收稿日期: 2016-12-06
  • 修回日期: 2017-01-09
  • 刊出日期: 2017-08-25
基金项目:

国家自然科学基金（51675002，51175002）;安徽省自然科学基金（1708085ME110）;安徽工业大学校青年教师科研基金（QZ201518）;安徽工业大学研究生创新研究基金（2015043）

  • 中图分类号: TN249

摘要: 为研究不同边界约束条件对薄板多点激光喷丸诱导残余应力和塑性变形的影响，采用数值模拟和试验结合的方法对7075铝合金薄板激光喷丸处理进行研究，对比分析了板料在底部全约束和两端夹持两种边界约束条件下的变形形貌和残余应力分布。结果表明：激光喷丸后，板料冲击区域均产生微凹坑；底部全约束的板料经激光喷丸后，未发生整体变形，仍然保持平整状态，而两端夹持的薄板喷丸区域发生了整体向上的凸起变形。两种边界约束条件下，最大残余压应力均出现在板料的冲击表面；底部全约束时的最大残余压应力为299.0 MPa，大于板料两端夹持时的251.6 MPa。在厚度方向上，其残余应力分布也存在着明显差异，底部全约束时，厚度方向上的残余应力分布形式为压应力-拉应力，而两端夹持时的分布形式为压应力-拉应力-压应力。

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