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支撑板孔径对7A04-T6铝合金板冷挤压后孔周环向残余应力分布的影响

张飞, 何宇廷, 张腾, 邵青, 李培源

张飞, 何宇廷, 张腾, 邵青, 李培源. 支撑板孔径对7A04-T6铝合金板冷挤压后孔周环向残余应力分布的影响[J]. 机械工程材料, 2015, 39(9): 89-93. DOI: 10.11973/jxgccl201509021
引用本文: 张飞, 何宇廷, 张腾, 邵青, 李培源. 支撑板孔径对7A04-T6铝合金板冷挤压后孔周环向残余应力分布的影响[J]. 机械工程材料, 2015, 39(9): 89-93. DOI: 10.11973/jxgccl201509021
ZHANG Fei, HE Yu-ting, ZHANG Teng, SHAO Qing, LI Pei-yuan. Effect of Backing Plate Hole Diameter on Residual Stress Distribution around 7A04-T6 Aluminum Alloy Hole after Cold Expansion[J]. Materials and Mechanical Engineering, 2015, 39(9): 89-93. DOI: 10.11973/jxgccl201509021
Citation: ZHANG Fei, HE Yu-ting, ZHANG Teng, SHAO Qing, LI Pei-yuan. Effect of Backing Plate Hole Diameter on Residual Stress Distribution around 7A04-T6 Aluminum Alloy Hole after Cold Expansion[J]. Materials and Mechanical Engineering, 2015, 39(9): 89-93. DOI: 10.11973/jxgccl201509021

支撑板孔径对7A04-T6铝合金板冷挤压后孔周环向残余应力分布的影响

基金项目: 

国家自然科学基金资助项目(51475470)

详细信息
    作者简介:

    张飞(1990-), 男, 河南禹州人, 硕士研究生。

  • 中图分类号: V261.2

Effect of Backing Plate Hole Diameter on Residual Stress Distribution around 7A04-T6 Aluminum Alloy Hole after Cold Expansion

  • 摘要: 使用非线性有限元软件建立了含孔7A04-T6铝合金板的开缝衬套冷挤压模型, 模拟了开缝衬套冷挤压过程, 对冷挤压后孔周环向残余应力的分布进行了预测, 并与实测结果进行对比, 最后探讨了不同支撑板孔径下冷挤压后孔周环向残余应力的分布。结果表明: 孔周环向残余应力的模拟结果与实测结果较为吻合; 随着支撑板孔径增大, 板件入口层处残余压应力有增大的趋势; 当支撑板孔径小于11.74 mm时, 在孔边出口层会形成明显的凸台, 造成残余压应力突变, 出口层残余应力峰值出现在支撑板孔边所在处; 随着支撑板孔径增大, 板件出口层环向残余应力逐渐趋向平滑, 凸台现象逐渐减缓。
    Abstract: A split sleeve cold-expansion model of 7A04-T6 aluminum alloy plate with hole was carried out with a finite element software, the split sleeve cold-expansion process was simulated, the hoop residual stress distribution around the hole after cold expansion was predicted, and the prediction results was compared with the measured results. The hoop residual stress distribution around the hole after cold expansion at different backing plate hole diameters was discussed finally. The results show that the simulated residual stresses around the hole was accordance with the measured results. The residual compressive stress in the entrance layer of the plate exhibited an increase trend with the increase of the backing plate hole diameter. When the backing plate hole diameter was smaller than 11.74 mm, lug boss was formed in the exit layer, which lead the residual compressive stress changed sharply, and the residual compressive stress peak in the exit layer located in the backing plate hole edge. The hoop residual stress tended to change more smoothly with the increase of the backing plate hole diameter, and the lug boss vanished gradually.
  • [1] 戴如勇, 于中奇, 刘忠伟, 等.渗碳淬火18CrNiMo7-6钢的表面喷丸强化及表征[J].机械工程材料,2013, 37(5):100-102.
    [2] REN X D, ZHAN Q B, YANG H M, et al. The effects of residual stress on fatigue behavior and crack propagation from laser shock processing-worked hole[J]. Materials and Design,2013,44:149-154.
    [3] 王学德, 杨磊, 周鑫, 等.钛合金激光冲击强化层的残余应力及显微组织[J].机械工程材料, 2012, 36(4):77-83.
    [4] 中国航空科学技术研究院.飞机结构抗疲劳断裂强化设计手册[M].北京: 航空工业出版社, 1993.
    [5] RICH D L, IMPELLIZZERI L F. Fatigue analysis of cold-worked and interference fit fastener hole[J]. ASTM Special Technical Publication, 1977, 637:153-175.
    [6] BALL D L, LOWRY D R. Experimental investigation on the effects of cold expansion of fastener holes [J].Fatigue & Fracture of Engineering Materials & Structures,1998,21:17-34.
    [7] KIM C, YANG W H, HEO S P, et al. Analysis of residual stresses induced by cold expansion using finite element method [J]. Journal of the Korean Society for Aeronautical and Space Sciences,2002,30:46-52.
    [8] PAVIER M J, POUSSARD C G C, SMITH D J. A finite element simulation of the cold working process for fastener holes[J]. Journal of Strain Analysis for Engineering Design,1997,32:287-300.
    [9] PAPANIKOS P, MEGUID S A. Elasto-plastic finite element analysis of the cold expansion of adjacent fastener holes [J]. Journal of Materials Processing Technology,1999,92/93:424-428.
    [10] NIGRELLI V, PASTA S. Finite-element simulation of residual stress induced by split-sleeve cold-expansion process of holes [J]. Journal of Materials Processing Technology,2008,205:290-296.
    [11] SU M, AMROUCHE A, MESMACQUE G,et al.Numerical study of double cold expansion of the hole at crack tip and the influence on the residual stresses field [J]. Computational Materials Science,2008,41:350-355.
    [12] 王洪达,苏宏华.开缝衬套冷挤压残余应力分布有限元仿真[J].机械制造与自动化,2010,39(3):98-100.
    [13] CHAKHERLOU T N, TAGHIZADEH H, AGHDAM A B. Experimental and numerical comparison of cold expansion and interference fit methods in improving fatigue life of holed plate in double shear lap joints[J]. Aerospace Science and Technology,2013,29:351-362.
    [14] CHAKHERLOU T N, AGHDAM A B. An experimental investigation on the effect of short time exposure to elevated temperature on fatigue life of cold expanded fastener holes [J]. Materials and Design,2008,29:1504-1511.
    [15] 吴学仁.飞机结构金属材料力学性能手册[M].北京: 航空工业出版社, 1996.
    [16] YAN W Z, WANG X S, GAO H S, et al.Effect of split sleeve cold expansion on cracking behaviors of titanium alloy TC4 holes[J]. Engineering Fracture Mechanics,2012,88:79-89.
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出版历程
  • 收稿日期:  2015-07-15
  • 刊出日期:  2015-09-19

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