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Study on stress distribution in microregion close to the shell of core-shell particle reinforced metal matrix composites

机译：靠近核心壳颗粒增强金属基复合材料壳体的微型壳体应力分布研究

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摘要

The stress distribution in microregion close to the shell of core-shell particle reinforced metal matrix composites is studied by the finite element analysis in this work. It is found that the stress distribution of the composites is dependent on the elastic modulus of both shell and core phases as well as the difference between them. If the elastic modulus of the formed shell is larger than that of the core, the load borne by the shell will be increased, otherwise, the load borne by the matrix and the core will be increased. The formation of shell and its nature can also significantly change the position of the maximum stress on the reinforced particles but have little influence on that in the matrix. When the elastic modulus of the shell is smaller than that of the core, the maximum stress position in the core-shell particle will be at the core and close to the interface between core and shell, otherwise, it is shift to the shell and also close to the interface between core and shell. The degree of the stress concentration in Al matrix becomes more serious after the formation of the shell in the reinforced particles, while that in shell of core-shell particles mainly depends on the modulus difference of core and shell.
机译：通过该工作的有限元分析研究了靠近芯 - 壳颗粒增强金属基质复合材料壳的微型引中的应力分布。结果发现复合材料的应力分布取决于壳和核心相的弹性模量以及它们之间的差异。如果所形成的壳体的弹性模量大于芯的弹性模量，则由壳体承载的负荷将增加，否则，由矩阵和核心承载的负载将增加。壳体的形成及其性质也可以显着改变增强颗粒上的最大应力的位置，但对基质中的影响几乎没有影响。当壳体的弹性模量小于芯的弹性模量时，芯壳颗粒中的最大应力位置将在芯处并靠近核心和壳之间的界面，否则，它也会转向壳体和壳体靠近核心和壳之间的界面。在增强颗粒中形成壳后，Al基质中应力浓度的程度变得更严重，而在核 - 壳颗粒的壳中主要取决于芯和壳的模量差异。

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  • 来源
    《Materials Science and Engineering》 |2020年第may15期|139317.1-139317.14|共14页
  • 作者

    Haimin Ding; Haoran Jia; Minmin Li; Wenzhi Miao; Chunyan Li; Qing Liu;

  • 作者单位

    School of Energy Power and Mechanical Engineering North China Electric Power University Baoding 071003 PR China;

    School of Energy Power and Mechanical Engineering North China Electric Power University Baoding 071003 PR China;

    School of Energy Power and Mechanical Engineering North China Electric Power University Baoding 071003 PR China;

    School of Energy Power and Mechanical Engineering North China Electric Power University Baoding 071003 PR China;

    School of Energy Power and Mechanical Engineering North China Electric Power University Baoding 071003 PR China;

    School of Energy Power and Mechanical Engineering North China Electric Power University Baoding 071003 PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Metal matrix composites; Finite element analysis; Stress distribution;

    机译：金属基复合材料;有限元分析;压力分布;

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