On the role of fluid viscosity in wave propagation in elastic plates under heavy fluid loading
On the role of fluid viscosity in wave propagation in elastic plates under heavy fluid loading
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DOI：
10.1016/j.jsv.2007.10.001
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发表时间：
2008-04
影响因子：
4.7
通讯作者：
S. Sorokin;A. V. Chubinskij
中科院分区：
文献类型：
--
作者：
S. Sorokin;A. V. Chubinskij
本文研究了受静态粘性可压缩流体载荷的弹性板中自由波的传播和衰减。为了验证所采用的流体模型，考虑了流体层中波传播的基本问题。然后分析了波在常规Kirchhoff板和夹层板中的传播。在这三种情况下的色散曲线的位置确定和相互比较。否则传播的“流体起源”和“结构起源”波的粘性引起的衰减被量化。进行参数研究以探索以下因素的影响，例如，夹层板中流体层的宽度或蒙皮和芯层材料的刚度比对波衰减的影响。
This paper addresses free wave propagation and attenuation in elastic plates loaded by a quiescent viscous compressible fluid. To validate the adopted fluid model, an elementary problem of wave propagation in a layer of fluid is considered. Then wave propagation in a conventional Kirchhoff plate and in a sandwich plate loaded by a layer of viscous compressible fluid is analysed. The location of dispersion curves in each of these three cases is determined and compared with each other. The viscosity-induced attenuation of otherwise propagating ‘fluid-originated’ and ‘structure-originated’ waves is quantified. The parametric studies are conducted to explore the influence of, e.g., the width of a fluid layer or a stiffness ratio of the materials of skin and core plies in a sandwich plate on the wave attenuation.