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<p>To address the challenge of lightweight and high-performance structural design, a novel bionic sandwich plate (VP) inspired by the vein structure of <i>Victoria cruziana</i> leaves is proposed. The mechanical behavior of VPs under impact and blast loading is systematically investigated using finite element simulations. The study explores the influence of key structural parameters, including core distribution, wall thickness, core height, and skin thickness, on energy absorption, peak force, deformation, and failure modes. Results demonstrate that optimizing the core distribution and increasing the skin thickness can significantly enhance impact resistance, while increasing wall thickness or height provides limited benefits in terms of structural efficiency. In blast scenarios, optimizing the core distribution represents the most cost-effective and efficient strategy for enhancing the structural performance of sandwich plates. A random forest model is further employed to quantify the importance of each parameter, allowing for efficient identification of critical design variables based on different loading conditions. This research significantly enhances the understanding of the structural behavior of bionic sandwich plates and offers valuable insights for their practical application in fields such as aerospace, defense, and energy absorption, where weight minimization and resistance to impact and blast loads are of paramount importance.</p>

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Dynamic impact and blast behaviors of biomechanically inspired Victoria cruziana vein sandwich plate with variable structural geometries

  • 期刊论文

  • 发表日期：

    2025年8月28日

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  • Peng Guan,
  • Chao Hao,
  • Saiya Gong,
  • Yankun Chen

摘要

To address the challenge of lightweight and high-performance structural design, a novel bionic sandwich plate (VP) inspired by the vein structure of Victoria cruziana leaves is proposed. The mechanical behavior of VPs under impact and blast loading is systematically investigated using finite element simulations. The study explores the influence of key structural parameters, including core distribution, wall thickness, core height, and skin thickness, on energy absorption, peak force, deformation, and failure modes. Results demonstrate that optimizing the core distribution and increasing the skin thickness can significantly enhance impact resistance, while increasing wall thickness or height provides limited benefits in terms of structural efficiency. In blast scenarios, optimizing the core distribution represents the most cost-effective and efficient strategy for enhancing the structural performance of sandwich plates. A random forest model is further employed to quantify the importance of each parameter, allowing for efficient identification of critical design variables based on different loading conditions. This research significantly enhances the understanding of the structural behavior of bionic sandwich plates and offers valuable insights for their practical application in fields such as aerospace, defense, and energy absorption, where weight minimization and resistance to impact and blast loads are of paramount importance.