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<p>In the present study, the modal behaviors of an elastic metamaterial (EM) rod with end-coupled inertial mass are investigated and its localized natural mode in the bandgap is revealed. The dispersion curves and the special modal properties in pass band and bandgap of the EM rod are elucidated both by theoretical and numerical methods. A unique mode is found to exist in bandgap and observed as a kind of localized mode, which may lead significant influences in the field of vibration control. The vibration properties are discussed numerically, and the phenomena are basically consistent with the experimental results. This work and relevant results may provide a useful reference for this research field.</p>

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Localized mode in the bandgap of elastic metamaterial rod with end-coupled inertial mass

  • 期刊论文

  • 发表日期：

    2026年1月28日

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  • Di Mu,
  • Jiacheng Pan,
  • Wenxiao Hu,
  • Xinmin Chen,
  • Haisheng Shu,
  • Zhiguang Wu

摘要

In the present study, the modal behaviors of an elastic metamaterial (EM) rod with end-coupled inertial mass are investigated and its localized natural mode in the bandgap is revealed. The dispersion curves and the special modal properties in pass band and bandgap of the EM rod are elucidated both by theoretical and numerical methods. A unique mode is found to exist in bandgap and observed as a kind of localized mode, which may lead significant influences in the field of vibration control. The vibration properties are discussed numerically, and the phenomena are basically consistent with the experimental results. This work and relevant results may provide a useful reference for this research field.