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Stable extremely-high-damping discrete viscoelastic systems due to negative stiffness elements

机译:具有负刚度元素的稳定的超高阻尼离散粘弹性系统

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摘要

Systems with negative stiffness constituents can have extreme material properties greatly exceeding those of either constituent. We show that a discrete system with a viscoelastic damping element and a negative stiffness element can be made with overall viscoelastic damping orders of magnitude higher than that of any constituent, or of the system with all elements of positive stiffness. The product of stiffness and damping, important for vibration damping, is also enhanced by orders of magnitude. We show this system is unconditionally stable in the high damping regime. The singularity in damping can be made arbitrarily close to the stability boundary.
机译:具有负刚度成分的系统可能具有极大的材料特性,远远超过任何一种成分。我们表明,可以制成具有粘弹性阻尼元件和负刚度元件的离散系统,其总粘弹性阻尼量级比任何组成部分或具有正刚度的系统的总粘弹性阻尼量级高。对于减振很重要的刚度和阻尼的乘积也增加了几个数量级。我们表明该系统在高阻尼状态下是无条件稳定的。阻尼的奇异性可以任意接近稳定边界。

著录项

  • 来源
    《Applied Physics Letters》 |2004年第22期|p.4451-4453|共3页
  • 作者

    Yun-Che Wang; Roderic S. Lakes;

  • 作者单位

    Department of Engineering Physics, Engineering Mechanics Program, University of Wisconsin-Madison, 147 Engineering Research Building, 1500 Engineering Drive, Madison, Wisconsin 53706-1687;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用物理学;
  • 关键词

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