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AN EFFICIENT APPROACH TO DETERMINE THE EFFECTIVE PROPERTIES OF RANDOM HETEROGENEOUS MATERIALS

机译:确定随机非均质材料有效性质的有效方法

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摘要

Many studies of effective properties of random heterogeneous materials focus on determination of the size of representative volume element (RVE), but few discuss acceleration of the convergence rates of the apparent material properties as the sizes of volume elements increase. In this study, the convergence of the apparent thermo-mechanical properties of aluminum/alumina random heterogeneous materials is investigated, and Richardson extrapolation technique is introduced to accelerate the convergence rates of apparent material properties. It is found that this approach efficiently predicts the effective material properties with significantly reduced computational effort. Meanwhile, the homogenized material properties are compared with theoretical bounds, i.e., the Voigt-Reuss bounds and the Hashin-Shtrikman bounds.
机译:随机异质材料的许多有效属性研究都集中在确定代表性体积元素(RVE)的大小上,但是很少讨论随着体积元素的大小增加表观材料属性的收敛速度的加快。在这项研究中,研究了铝/氧化铝无规异质材料的表观热机械性能的收敛性,并引入了Richardson外推技术以加快表观材料性能的收敛速度。发现该方法以显着减少的计算工作量有效地预测了有效的材料特性。同时,将均质化的材料特性与理论界限(即Voigt-Reuss界限和Hashin-Shtrikman界限)进行比较。

著录项

  • 来源
  • 会议地点 XIan(CN)
  • 作者

    Yatao Wu; Yufeng Nie;

  • 作者单位

    Department of Applied Mathematics, Northwestern Polytechnical University Xi'an, Shaanxi, China;

    Department of Applied Mathematics, Northwestern Polytechnical University Xi'an, Shaanxi, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
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