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<p>Utilizing the multiple reflection effect of wedge-shaped structures, this study constructs a wedge-type interface by introducing abrupt variations in material properties along a polyline path, significantly enhances stress wave dissipation in laminated plates. The theoretical relationship between the wedge angle and the transmission/reflection coefficients is derived, revealing a nonlinear correlation where the rate of change of these coefficients increases markedly at smaller angles. numerical models with varying interface angles are established and analyzed to examine the temporal evolution of stress waves and energy dissipation, comparing their peak values. The wave attenuation mechanisms are further investigated through energy dissipation analysis. The results demonstrate that wave impedance mismatch attenuates the first peak amplitude by 85.5 %. Furthermore, the variation of the first peak amplitude after transmission follows the same trend as the transmission coefficient. Multiple reflections at the interface enhance energy dissipation and reduce the output energy.</p>

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Propagation law and energy dissipation mechanism of stress waves in laminated composites with wedge-shaped interfaces

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Jiayuan Luo,
  • Bo Tang

摘要

Utilizing the multiple reflection effect of wedge-shaped structures, this study constructs a wedge-type interface by introducing abrupt variations in material properties along a polyline path, significantly enhances stress wave dissipation in laminated plates. The theoretical relationship between the wedge angle and the transmission/reflection coefficients is derived, revealing a nonlinear correlation where the rate of change of these coefficients increases markedly at smaller angles. numerical models with varying interface angles are established and analyzed to examine the temporal evolution of stress waves and energy dissipation, comparing their peak values. The wave attenuation mechanisms are further investigated through energy dissipation analysis. The results demonstrate that wave impedance mismatch attenuates the first peak amplitude by 85.5 %. Furthermore, the variation of the first peak amplitude after transmission follows the same trend as the transmission coefficient. Multiple reflections at the interface enhance energy dissipation and reduce the output energy.