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A novel cylindrical negative stiffness structure for shock isolation

机译：新型圆柱负刚度结构，用于隔震

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摘要

The negative stiffness (NS) metamaterial is a promising material that has attracted a great amount of interest. Many types of NS structures have been proposed and investigated. However, almost all of the previously proposed structures were cuboidal, which is undesirable for certain special engineering applications. In this paper, a cylindrical NS structure composed of spatial curved beams is proposed, and can potentially be applied to shock isolation, vibration control, and deployable structures. Specimens were fabricated using Fused Deposition Modeling (FDM) technology. The influence of the structural parameters on the NS property was investigated, and the criteria for the structure to achieve snap-through behavior were obtained. Impact tests were performed to investigate the structure's cushion performance. The results of the impact tests revealed that the structure achieved good cushion performance by thresholding the magnitude of the acceleration response, when the snap-through behavior occurred.
机译：负刚度（NS）超材料是一种很有前途的材料，引起了人们的极大兴趣。已经提出并研究了许多类型的NS结构。然而，几乎所有先前提出的结构都是立方形的，这对于某些特殊工程应用是不希望的。在本文中，提出了一种由空间弯曲梁组成的圆柱形NS结构，并可以潜在地应用于隔震，振动控制和可展开结构。使用熔融沉积建模（FDM）技术制造样品。研究了结构参数对NS性能的影响，并获得了实现快速吸附行为的结构准则。进行冲击测试以研究结构的缓冲性能。冲击测试的结果表明，当发生咬合行为时，通过限制加速度响应的大小，该结构可实现良好的缓冲性能。

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  • 来源
    《Composite Structures》 |2019年第4期|397-405|共9页
  • 作者

    Tan Xiaojun; Wang Bing; Chen Shuai; Zhu Shaowei; Sun Yuguo;

  • 作者单位

    Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150080, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150080, Heilongjiang, Peoples R China|Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Shaanxi, Peoples R China;

    Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150080, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150080, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150080, Heilongjiang, 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

    Cylindrical structure; Negative stiffness; Snap-through behavior; Shock isolation;

    机译：圆柱结构负刚度咬合行为冲击隔离;

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