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Description of wave propagation by fading memory

机译:衰落存储器对波传播的描述

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摘要

In this paper, a rational function is used to approximate the low―frequency part of the dynamic stiffness. A correct asymptotic behavibur is ensured by treating the respective high-frequency part separately. Transformation of the force―displacement relationship into the time―domain leads to a formulation which contains fractional derivatives of the unknown interface variables. Thus, an analogy between fading memory of viscoelastic materials and radiation damping is clearly visible.
机译:在本文中,使用有理函数来近似动态刚度的低频部分。通过分别处理各个高频部分,可以确保正确的渐近行为。力-位移关系到时域的转换导致包含未知界面变量的分数导数的公式。因此,粘弹性材料的褪色记忆与辐射衰减之间的类比清晰可见。

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