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Numerical study on mechanical behavior of foam core sandwich plates under repeated impact loadings

机译：重复冲击载荷下泡沫芯夹层板力学行为的数值研究

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摘要

In this paper, the mechanical behavior of aluminum foam sandwich plate (AFSP) subjected to repeated impact loadings is investigated. Firstly, the method to achieve repeated impacts of AFSP in the numerical simulation is proposed. Then dynamic responses obtained from repeated impact tests are compared with those of numerical simulations, and the results show good agreements. Besides, the mechanism of energy absorption of the AFSP under repeated impacts are examined. Results show that the elastic deformation energy of AFSP increases with the impact number, but the increment declines. On the contrary, the plastic deformation energy decreases with the impact number. In addition, the effects of thickness distribution of face sheets on impact resistance of AFSP under repeated impacts are investigated. It can be found that as the thickness of front face sheet increases, the peak impact force and the energy absorbed by front face sheet increase, while the deflections of front and back face sheets, the energy absorbed by back face and aluminum foam decrease.
机译：本文研究了经受重复冲击载荷的铝泡沫夹层（AFSP）的力学行为。首先，提出了实现在数值模拟中实现AFSP反复影响的方法。然后将重复的冲击试验获得的动态响应与数值模拟的相比，结果显示了良好的协议。此外，检查了在重复影响下的AFSP的能量吸收机制。结果表明，AFSP的弹性变形能量随冲击数而增加，但增量下降。相反，塑性变形能量随冲击数减少。此外，研究了脸部厚度分布对反复撞击抗冲击性对AFSP抗冲击性的影响。可以发现，随着前面板的厚度增加，峰值冲击力和由前面板的厚度增加，而前面和背面面板的偏转，由背面吸收的能量和铝泡沫减小。

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  • 来源
    《Composite Structures》 |2019年第9期|111030.1-111030.11|共11页
  • 作者

    Guo Kailing; Zhu Ling; Li Yinggang; Yu T. X.;

  • 作者单位

    Wuhan Univ Technol Minist Educ Key Lab High Performance Ship Technol Wuhan 430063 Hubei Peoples R China|Wuhan Univ Technol Sch Transportat Dept Naval Architecture Wuhan 430063 Hubei Peoples R China|Wuhan Univ Technol Sch Transportat Dept Ocean & Struct Engn Wuhan 430063 Hubei Peoples R China;

    Wuhan Univ Technol Minist Educ Key Lab High Performance Ship Technol Wuhan 430063 Hubei Peoples R China|Collaborat Innovat Ctr Adv Ship & Deep Sea Explor Wuhan 430063 Hubei Peoples R China;

    Wuhan Univ Technol Minist Educ Key Lab High Performance Ship Technol Wuhan 430063 Hubei Peoples R China|Wuhan Univ Technol Sch Transportat Dept Naval Architecture Wuhan 430063 Hubei Peoples R China|Wuhan Univ Technol Sch Transportat Dept Ocean & Struct Engn Wuhan 430063 Hubei Peoples R China;

    Wuhan Univ Technol Sch Transportat Dept Naval Architecture Wuhan 430063 Hubei Peoples R China|Wuhan Univ Technol Sch Transportat Dept Ocean & Struct Engn Wuhan 430063 Hubei Peoples R China|Hong Kong Univ Sci & Technol Dept Mech & Aerosp Engn Kowloon Clear Water Bay Hong Kong Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sandwich plate with aluminum foam core; Repeated impacts; Dynamic responses; Thickness distribution; Energy absorption;

    机译：三明治板用铝泡沫芯;反复影响;动态响应;厚度分布;能量吸收;

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