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首页> 外文期刊>Engineering Fracture Mechanics >Internal-structure-model based simulation research of aramid honeycomb sandwich panel subjected to intense impulse loading
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Internal-structure-model based simulation research of aramid honeycomb sandwich panel subjected to intense impulse loading

机译：基于内部结构模型的芳族蜂窝夹层小组对强脉冲载荷的仿真研究

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摘要

An experimental investigation on the dynamic response of composite sandwich panels, comprising two titanium alloy plates and an aramid honeycomb core, subjected to intense impulse loading was carried out with the electric gun method. And brief results were presented within this paper. Based on the experiments, simulations were conducted with SPH-based internal structure model using the AUTODYN software. Here, the elasto-plastic constitutive was adopted to describe the mechanical behaviour of the core and corresponding matrix constitutive parameters were obtained quantitatively. An optimal particle size was determined by comparing the effects of different particle sizes on computational efficiency and accuracy. Afterwards, the proposed SPH model was validated with the experiments, making it feasible for following studies. To study the weakening effect of the core, a stress decay coefficient was proposed, and the results proved that the aramid honeycomb core played an important role in weakening the reflected tensile wave. Finally, the impact resistance assessment, in which three different forms of panels were compared, indicated that the aramid honeycomb sandwich panel was superior to the other two.
机译：用电动枪法进行了对包含强烈脉冲载荷的复合夹层板的动态响应的实验研究，进行了激烈的脉冲载荷。在本文中提出了简要的结果。基于实验，使用Autodyn软件用基于SPH的内部结构模型进行仿真。这里，采用弹性塑料本构体来描述核心的力学行为，并且可以定量获得相应的基质组成型参数。通过比较不同粒度尺寸对计算效率和准确性的影响来确定最佳粒径。之后，通过实验验证了所提出的SPH模型，使其可行的研究可行。为了研究核心的弱化效果，提出了应力衰变系数，结果证明了芳族蜂窝核心在削弱反射拉伸波方面发挥了重要作用。最后，抗冲击性评估，其中比较了三种不同形式的面板，表明芳族蜂窝夹层面板优于另外两个。

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  • 来源
    《Engineering Fracture Mechanics》 |2018年第2018期|共14页
  • 作者

    Zhao Yayun; Sun Qiran; Feng Jiangtuo; Li Ruiyu; Sun Yuxin;

  • 作者单位

    Nanjing Univ Sci &

    Technol Natl Key Lab Transient Phys 200 Xiao Ling Wei Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Key Lab Transient Phys 200 Xiao Ling Wei Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Key Lab Transient Phys 200 Xiao Ling Wei Nanjing 210094 Jiangsu Peoples R China;

    China Ship Dev &

    Design Ctr Wuhan 430064 Hubei Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Key Lab Transient Phys 200 Xiao Ling Wei Nanjing 210094 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程力学;
  • 关键词

    Sandwich panel; Aramid honeycomb; Impulse loading; SPH method; Internal structure model;

    机译：夹心板;芳纶蜂窝;脉冲载荷;SPH方法;内部结构模型;

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