水负载弹性柱壳的类lamb波研究

孙铁林;孙辉

振动与冲击 ›› 2013, Vol. 32 ›› Issue (19) : 187-191.

PDF(1799 KB)
PDF(1799 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (19) : 187-191.
论文

水负载弹性柱壳的类lamb波研究

  • 孙铁林,孙辉
作者信息 +

Research on Lamb-like wave of submerged elastic cylindrical shell

  • Sun Tie-lin,Sun Hui
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文章历史 +

摘要

推导水负载弹性柱壳中类Lamb波的频散方程得到了类Lamb波各模态相速度和群速度的频散曲线,求解了类Lamb波的传播轨迹以及棱角波和弹性散射波的时序关系。进行了水中弹性柱壳的回波测量实验,实验结果表明强弹性散射波仅在该模态类Lamb波辐射效率较低且满足临界角关系时出现,并验证了时序关系。

Abstract

The frequency dispersion equation of Lamb-like wave is derived for submerged elastic cylindrical shell, and the phase velocity and group velocity dispersion curves are obtained, it is calculated for propagation trajectory of Lamb-like wave and time relationships between edge wave and elastic scattered wave. Echos of submerged elastic cylindrical shell are measured in experiment, which shows strong elastic scattering wave was found in the case of low radiation efficiency and critical angle relations, time relationships are also verified.



关键词

类Lamb波 / 相速度 / 群速度 / 辐射效率 / 时序关系

Key words

Lamb-like wave / phase velocity / group velocity / radiation efficiency / time relationships

引用本文

导出引用
孙铁林;孙辉. 水负载弹性柱壳的类lamb波研究[J]. 振动与冲击, 2013, 32(19): 187-191
Sun Tie-lin;Sun Hui. Research on Lamb-like wave of submerged elastic cylindrical shell [J]. Journal of Vibration and Shock, 2013, 32(19): 187-191

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