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首页> 外文期刊>Materials & design >The impact responses and the finite element modeling of layered trapezoidal corrugated aluminum core and aluminum sheet interlayer sandwich structures
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The impact responses and the finite element modeling of layered trapezoidal corrugated aluminum core and aluminum sheet interlayer sandwich structures

机译：层状梯形波纹铝芯和铝板夹层夹层结构的冲击响应及有限元建模

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摘要

The impact responses of brazed and adhesively bonded layered 1050 H14 trapezoidal corrugated aluminum core and aluminum sheet interlayer sandwich panels with 3003 and 1050 H14 aluminum alloy face sheets were investigated in a drop weight tower using spherical, flat and conical end striker tips. The full geometrical models of the tests were implemented using the LS-DYNA. The panels tested with spherical and flat striker tips were not penetrated and experienced slightly higher deformation forces and energy absorptions in 0°/90° corrugated layer orientation than in 0°/0° orientation. However, the panels impacted using a conical striker tip were penetrated/perforated and showed comparably smaller deformation forces and energy absorptions, especially in 0°/90° layer orientation. The simulation and experimental force values were shown to reasonably agree with each other at the large extent of deformation and revealed the progressive fin folding of corrugated core layers and bending of interlayer sheets as the main deformation mechanisms. The experimentally and numerically determined impact velocity sensitivity of the tested panels was attributed to the micro inertial effects which increased the critical buckling loads of fin layers at increasingly high loading rates.
机译：在具有球形，扁平和圆锥形末端撞锤头的落锤式沉重塔中，研究了钎焊和粘结层1050 H14梯形波纹铝芯和带有3003和1050 H14铝合金面板的铝板中间夹层板的冲击响应。使用LS-DYNA实现了测试的完整几何模型。用球形和扁平撞针尖端测试的面板在0°/ 90°波纹层方向上的变形力和能量吸收比0°/ 0°方向略高。然而，使用圆锥形撞针尖端撞击的面板被穿透/穿孔，并且显示出较小的变形力和能量吸收，尤其是在0°/ 90°层取向下。结果表明，在较大的变形范围内，模拟值和实验力值彼此合理地吻合，并显示出波纹状芯层的渐进翅片折叠和中间层片材的弯曲是主要的​​变形机理。实验和数值确定的被测板的撞击速度敏感性归因于微惯性效应，该惯性效应在越来越高的加载速率下增加了翅片层的临界屈曲载荷。

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  • 来源
    《Materials & design》 |2013年第4期|121-133|共13页
  • 作者

    Cenk Kilicaslan; Mustafa Gueden; Ismet Kutlay Odaci; Alper Tasdemirci;

  • 作者单位

    Dynamic Testing and Modeling Laboratory, Department of Mechanical Engineering, Izmir Institute of Technology, Guelbahce Koeyue, Urla, Izmir, Turkey;

    Dynamic Testing and Modeling Laboratory, Department of Mechanical Engineering, Izmir Institute of Technology, Guelbahce Koeyue, Urla, Izmir, Turkey;

    Dynamic Testing and Modeling Laboratory, Department of Mechanical Engineering, Izmir Institute of Technology, Guelbahce Koeyue, Urla, Izmir, Turkey;

    Dynamic Testing and Modeling Laboratory, Department of Mechanical Engineering, Izmir Institute of Technology, Guelbahce Koeyue, Urla, Izmir, Turkey;

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