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Peridynamic modeling of Lamb wave propagation in bimaterial plates

机译：兰姆波在双材料板中传播的动力学模型

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摘要

In this study the nonlocal bond-based peridynamic (PD) theory was applied to simulate Lamb wave transmission in 2D bimaterial plates. Plates of unlike materials were jointed end-to-end to make a bimaterial plate. The surface of the plate was then excited tangentially by single-frequency and mull-frequency force signals. The influence of changing material properties on travelling of the symmetric and antisymmetric Lamb waves were studied in detail. The phase and group velocities of travelling wave in bimaterial plates were calculated and it was found that dissimilar material properties of two joint plates can significantly alter the amplitude and arrival time of the wave. Moreover, Fast Fourier Transform (FFT) of the time history of symmetric Lamb wave velocity was calculated and verified. Accuracy and consistency of PD wave model was confirmed entirely using Spectral Finite Element Method (SFEM). The comparison between the results of two applied methods shows a good agreement.
机译：在这项研究中，基于非局部键的绕动力学（PD）理论被应用于模拟Lamb波在二维双材料板中的传输。将不同材料的板首尾相连以制成双材料板。然后，通过单频和全频力信号切向激发板的表面。详细研究了材料性质的变化对对称和反对称兰姆波传播的影响。计算了双材料板中行波的相速度和群速度，发现两个连接板的材料性质不同可以显着改变波的振幅和到达时间。此外，计算和验证了对称兰姆波速度的时间历史的快速傅立叶变换（FFT）。 PD波模型的准确性和一致性完全使用频谱有限元方法（SFEM）确认。两种应用方法的结果之间的比较显示出很好的一致性。

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  • 来源
    《Composite Structures》 |2019年第4期|12-22|共11页
  • 作者

    Alebrahim Reza;

  • 作者单位

    UTP, High Performance Cloud Comp Ctr, Tronoh 31750, Perak, Malaysia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lamb wave; Bimaterial plates; Peridynamics;

    机译：兰姆波;双材料板;流体动力学;

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