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Consequences of disorder on the stability of amorphous solids

机译：无定形固体稳定性无序的后果

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摘要

Highly accurate numerical simulations are employed to highlight the subtle but important differences in the mechanical stability of perfect crystalline solids versus amorphous solids. We stress the difference between strain values at which the shear modulus vanishes and strain values at which a plastic instability ensues. The temperature dependence of the yield strain is computed for the two types of solids, showing different scaling laws: γ_Y approx=γ_Y~0 - C_1T~(1/3) for crystals versus γ_Y approx= γ_Y~0 - C_2T~(2/3)for amorphous solids.
机译：高度精确的数值模拟用于突出完美结晶固体与非晶固体在机械稳定性方面的细微但重要的差异。我们强调剪切模量消失时的应变值与随后产生塑性不稳定性时的应变值之间的差异。针对两种类型的固体计算了屈服应变的温度依赖性，显示出不同的缩放定律：晶体的γ_Y近似=γ_Y〜0-C_1T〜（1/3）与晶体的γ_Y近似=γ_Y〜0-C_2T〜（2 / 3）用于无定形固体。

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  • 来源
    《Physical review》 |2015年第9期|094105.1-094105.8|共8页
  • 作者

    Vladimir Dailidonis; Valery Ilyin; Pankaj Mishra; Itamar Procaccia;

  • 作者单位

    Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel,Department of Computer Maintenance, Bogolyubov Institute for Theoretical Physics, 03680 Kiev, Ukraine;

    Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel;

    Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel;

    Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel;

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  • 正文语种 eng
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  • 关键词

    mechanical properties of solids;

    机译：固体的机械性能;

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