Homogenization of a viscoelastic matrix in linear frictional contact

Homogenization of a viscoelastic matrix in linear frictional contact
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线性摩擦接触中粘弹性基体的均匀化

DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
Xuming Xie
Xuming Xie
中科院分区:
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文献类型:
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作者:
R. Gilbert;A. Panchenko;Xuming Xie

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研究了声波在含有松散颗粒的部分固结复合材料中的传播。颗粒对材料的固结部分的摩擦引起机械能耗散。这种情况是通过假设介质具有在小尺度ε上快速变化的周期性微观结构来建模的。每个周期性微观单元由粘弹性基质组成,所述粘弹性基质包含与基质摩擦接触的刚性颗粒。我们使用双尺度收敛的方法来获得均匀化材料的有效声学方程。有效方程是历史相关的,包含体积力项,让人想起著名的斯托克斯阻力。版权所有© 2004约翰威利父子有限公司
The paper is devoted to study of acoustic wave propagation in a partially consolidated composite material containing loose particles. Friction of particles against the consolidated part of the material causes mechanical energy dissipation. This situation is modelled by assuming that the medium has a periodic microstructure changing rapidly on the small scale ε. Each of the periodic microscopic cells is composed of a viscoelastic matrix containing a rigid particle in frictional contact with the matrix. We use the methods of two‐scale convergence to obtain effective acoustic equations for the homogenized material. The effective equations are history‐dependent and contain the body force term, reminiscent of the well‐known Stokes drag force. Copyright © 2004 John Wiley & Sons, Ltd.