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This study investigates the sound transmission loss (STL) characteristics of nanoparticle-reinforced carbon fiber double-walled panel structures under external mean flow conditions. A vibroacoustic coupling theoretical model is developed to analyze the interaction between aerodynamic excitation and acoustic transmission in the proposed composite structure. Theoretical analysis demonstrates that both nanoparticle mass incorporation and external mean flow significantly influence STL performance. The synergistic effects of particle mass loading, flow-structure interaction, and constrained boundaries collectively enhance low-frequency sound insulation capabilities. A material based optimization strategy is proposed to improve the acoustic performance of carbon fiber double-walled panels, providing insights for advancing practical applications of such structures in flow-related noise control scenarios.

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Coupling Effect of Nanoparticle and External Mean Flow on Sound Transmission Through Carbon Fiber Composite Double-Walled Panel

  • 会议论文

  • 发表日期：

    2026年

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  • Boyang Zhao,
  • Dan Sui,
  • Junli Chen,
  • Jie Zhou

摘要

This study investigates the sound transmission loss (STL) characteristics of nanoparticle-reinforced carbon fiber double-walled panel structures under external mean flow conditions. A vibroacoustic coupling theoretical model is developed to analyze the interaction between aerodynamic excitation and acoustic transmission in the proposed composite structure. Theoretical analysis demonstrates that both nanoparticle mass incorporation and external mean flow significantly influence STL performance. The synergistic effects of particle mass loading, flow-structure interaction, and constrained boundaries collectively enhance low-frequency sound insulation capabilities. A material based optimization strategy is proposed to improve the acoustic performance of carbon fiber double-walled panels, providing insights for advancing practical applications of such structures in flow-related noise control scenarios.