首页> 外文会议>International conference on vibration, structural engineering and measurement >Numerical Simulation of Acoustic Wave Propagation in Cylindrical Fluid-Saturated Poroelastic Shell Immersed in Fluids
【24h】

Numerical Simulation of Acoustic Wave Propagation in Cylindrical Fluid-Saturated Poroelastic Shell Immersed in Fluids

机译:浸入流体的圆柱流体饱和多孔弹性壳中声波传播的数值模拟

获取原文

摘要

Acoustic wave propagation in fluid-saturated porous cylindrical shell is investigated in this paper by using the Biot's theory. The Expressions for acoustic pressure and radical displacement in and out fluid, the expressions for components of solid and filtration displacement and pore fluid pressure and stress tensor are given. The numerical simulation is operated on acoustic field in fluid of poroelastic cylindrical shell, and the full-waveform is obtained by Fourier transform, and acoustic pressure field in frequency-wavenumber domain is analyzed, as well as the influence of inner and outer radii on wave amplitude is discussed. It shows that if the thickness of shell remains constant, the amplitude of longitudinal mode increases and that of Stoneley wave decreases when inner and outer radii increasing. In the fast formation the influence of inner and outer radii on the amplitude of longitudinal mode is notable. In the slow formation the amplitude of Stoneley wave will decrease with inner and outer radii increasing.
机译:本文利用毕奥特理论研究了流体饱和多孔圆柱壳中的声波传播问题。给出了声压和流体内外基向位移的表达式,固体和过滤位移的成分以及孔隙流体压力和应力张量的表达式。对多孔弹性圆柱壳内流体的声场进行了数值模拟,并通过傅立叶变换获得了全波形,并分析了频率-波数域的声压场,以及内,外半径对波的影响。振幅进行了讨论。结果表明,如果壳的厚度保持恒定,则随着内,外半径的增加,纵模的振幅会增大,而斯通利波的振幅会减小。在快速地层中,内半径和外半径对纵向模态振幅的影响是显着的。在缓慢的地层中,斯通利波的振幅将随着内半径和外半径的增加而减小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号