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带衬套沉头螺栓复合材料/金属接头拉伸性能

陈坤 舒茂盛 胡仁伟 郭鑫 程羽佳 程小全

陈坤, 舒茂盛, 胡仁伟, 等 . 带衬套沉头螺栓复合材料/金属接头拉伸性能[J]. 北京航空航天大学学报, 2019, 45(3): 633-640. doi: 10.13700/j.bh.1001-5965.2018.0412
引用本文: 陈坤, 舒茂盛, 胡仁伟, 等 . 带衬套沉头螺栓复合材料/金属接头拉伸性能[J]. 北京航空航天大学学报, 2019, 45(3): 633-640. doi: 10.13700/j.bh.1001-5965.2018.0412
CHEN Kun, SHU Maosheng, HU Renwei, et al. Tensile performance of countersunk bolted composite/metal joints with sleeve[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(3): 633-640. doi: 10.13700/j.bh.1001-5965.2018.0412(in Chinese)
Citation: CHEN Kun, SHU Maosheng, HU Renwei, et al. Tensile performance of countersunk bolted composite/metal joints with sleeve[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(3): 633-640. doi: 10.13700/j.bh.1001-5965.2018.0412(in Chinese)

带衬套沉头螺栓复合材料/金属接头拉伸性能

doi: 10.13700/j.bh.1001-5965.2018.0412
详细信息
    作者简介:

    陈坤  男, 硕士研究生。主要研究方向:复合材料结构设计

    程小全  男, 博士, 教授, 博士生导师。主要研究方向:飞机结构设计和复合材料结构设计

    通讯作者:

    程小全, E-mail:xiaoquan_cheng@buaa.edu.cn

  • 中图分类号: V214.8

Tensile performance of countersunk bolted composite/metal joints with sleeve

More Information
  • 摘要:

    对带衬套沉头螺栓连接复合材料/金属接头进行拉伸试验,测量了接头的载荷-位移曲线和面外变形等性能,研究了接头的拉伸行为。利用ABAQUS软件,建立了接头的有限元模型,计算得到的条件挤压载荷、极限破坏载荷和破坏模式与试验结果吻合较好,证明了所建有限元模型的有效性。利用该模型,分析了接头破坏的机理,并进一步研究了螺栓与衬套过盈量、拧紧力矩和钛板厚度等因素对接头拉伸性能的影响。结果表明:适度的增大螺栓与衬套的过盈量能有效提高接头的刚度和强度;在一定范围内增加拧紧力矩能提高接头的承载能力;增加钛板的厚度,对接头的刚度有明显提升,但对极限破坏载荷影响较小。

     

  • 图 1  接头示意图

    Figure 1.  Schematic diagram of joint

    图 2  试验件几何尺寸和贴片方案

    Figure 2.  Geometry of specimen and strain gauge arrangement

    图 3  试验件夹持状态

    Figure 3.  Specimen clamping state

    图 4  SLR1试验件破坏示意图

    Figure 4.  Schematic diagram of SLR1 specimen failure

    图 5  SLR2试验件破坏示意图

    Figure 5.  Schematic diagram of SLR2 specimen failure

    图 6  SLR2试验件中应变片测量结果

    Figure 6.  SLR2 specimen strain gauge measurement results

    图 7  有限元模型边界条件

    Figure 7.  Finite element model's boundary condition

    图 8  试验和有限元模拟的载荷-位移曲线

    Figure 8.  Load-displacement curves between experimental and finite element simulation

    图 9  试验和有限元模拟的螺栓变形对比

    Figure 9.  Comparison of bolt deformation between experimental and finite element simulation

    图 10  层合板和衬套局部应力云图

    Figure 10.  Laminate and sleeve local stress contour

    图 11  纤维/基体剪切损伤扩展

    Figure 11.  Fiber/matrix shear damage extension

    图 12  分层损伤扩展

    Figure 12.  Delamination damage extension

    图 13  不同螺栓与衬套的过盈量下接头载荷-位移曲线

    Figure 13.  Joint load-displacement curves under different interferences between bolts and sleeve

    图 14  不同拧紧力矩下接头载荷-位移曲线

    Figure 14.  Joint load-displacement curves under different tightening torques

    图 15  不同钛板厚度下接头载荷-位移曲线

    Figure 15.  Joint load-displacement curves under different titanium plate thickness

    表  1  T700/双马树脂的力学性能

    Table  1.   Mechanical properties of T700/bismaleimide

    参数 数值
    径向模量Exx/GPa 129
    径向拉伸强度XT/MPa 2 389
    径向压缩强度XC/MPa 1 415
    纬向模量EyyEzz/GPa 10.1
    纬向拉伸强度YT/MPa 67.5
    纬向压缩强度YC/MPa 220
    泊松比μxyμxz 0.25
    泊松比μyz 0.4
    剪切模量GxyGxz/GPa 6.0
    剪切模量Gyz/GPa 3.7
    剪切强度Sxy/MPa 94.8
    剪切强度SxzSyz/MPa 106
    下载: 导出CSV

    表  2  试验与有限元模拟结果对比

    Table  2.   Comparison of experimental results with finite element simulation results

    试验件编号 宽度/mm 厚度/mm 条件挤压载荷/kN 极限挤压载荷/kN
    SLR1 48.24 6.86 26.97 35.08
    SLR2 48.20 6.82 25.79 34.37
    SLR3 48.28 6.69 23.78 35.18
    试验平均值 48.24 6.79 25.51 34.87
    有限元 48.00 6.50 23.75 36.65
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-07-09
  • 录用日期:  2018-10-15
  • 网络出版日期:  2019-03-20

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