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An analysis of the propagation of impact elastic waves in isotropic and anisotropic materials

机译：各向同性和各向异性材料冲击弹性波的繁殖分析

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摘要

In order to study the propagation law of impact elastic waves on the platform better, an experimental platform is built with isotropic and anisotropic materials to explore the propagation law of impact elastic waves on the platform. The influences of platform materials, yarn arrangement directions, comparisons of longitudinal waves and transverse waves and lamination experiments on the propagation of impact stress waves are analyzed, respectively. The results of experiments show that the transverse waves along the fiber arrangement direction have the fastest propagation speed and the longitudinal waves have the slowest propagation speed in anisotropic materials. The speed of stress waves in lamination experiment is arranged from large to small: the epoxy resin lamination, the organic glass lamination, an epoxy resin thick plate, an organic glass thick plate. Adding arranged fibers with high acoustic velocity regularly when designing impact-resistant composite materials is beneficial to the transmission and spread of elastic waves. The impact isolating materials can be whole designed as a layered structure. A certain number of 90 degrees zigzag structures can also be arranged at the edge of the materials to enhance the effect of protection.
机译：为了研究平台上的冲击弹性波的传播规律，采用各向同性和各向异性材料建立了实验平台，探讨了平台上的冲击弹性波的传播规律。平台材料，纱线排列方向，纵波和横波的比较以及对冲击应力波的传播的影响分别进行了影响。实验结果表明，沿纤维布置方向的横波具有最快的传播速度，并且纵向波具有各向异性材料中的最慢的传播速度。层压实验中的应力波的速度从大到小：环氧树脂层压，有机玻璃层压，环氧树脂厚板，有机玻璃厚板。在设计抗冲击复合材料时，定期将具有高声速度的布置的纤维添加到弹性波的变速器和扩散是有益的。冲击隔离材料可以整体设计为层状结构。一定数量的90度之曲轴结构也可以布置在材料的边缘，以增强保护的效果。

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  • 来源
    《The Journal of the Textile Institute》 |2021年第10期|1622-1630|共9页
  • 作者

    Miao Yajing; Dong Miaojun; Xin Binjie; Yang Dan; Lin Lantian; Liu Shuhua;

  • 作者单位

    Shanghai Univ Engn Sci Sch Text & Fash Shanghai 201620 Peoples R China;

    Shanghai Municipal Educ Commiss Sci & Technol Dev Technol Mkt Dept Shanghai Peoples R China;

    Shanghai Univ Engn Sci Sch Text & Fash Shanghai 201620 Peoples R China;

    Shanghai Univ Engn Sci Sch Text & Fash Shanghai 201620 Peoples R China|Wuhan Text Univ Sch Text & Engn Wuhan Peoples R China;

    Shanghai Univ Engn Sci Sch Text & Fash Shanghai 201620 Peoples R China;

    Shanghai Univ Engn Sci Sch Text & Fash Shanghai 201620 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composites; elastic waves; propagation law; combination mode;

    机译：复合材料;弹性波;传播法;组合模式;

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