Abstract The concept of mimicking natural materials to design novel lightweight structures with high capacity of energy absorption is of great interest at present. Enormous natural structures exhibit fascinating mechanical performance after hundreds of millions of years of convergent evolution. Odontodactylus scyllarus , known as the peacock mantis shrimp, whose dactyl strike is recognized as one of the rapidest and powerful creatures found in nature, has an enormous potential to act as excellent biomimetic protective system. In this paper, a novel lightweight bio-inspired double-sine corrugated (DSC) sandwich structure has been proposed to enhance the impact resistance. The out-of-plane uniform compression of the bio-inspired bi-directionally sinusoidal corrugated core sandwich panel has been conducted under the quasi-static crushing load. Compared with the regular triangular and sinusoidal corrugated core sandwich panels, the bio-inspired DSC core sandwich panels significantly improve the structural crashworthiness as well as reducing the initial peak force greatly. Finally, the influences of the wave amplitude, wave number and corrugated core layer thickness on the mechanical performance of the bio-inspired DSC core sandwich panel are investigated to seek for the appropriate structural parameters to optimize the energy absorption behavior.

中文翻译：

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仿生双向波纹芯夹芯板在准静态挤压载荷下的耐撞性研究

摘要 模仿天然材料来设计具有高能量吸收能力的新型轻质结构的概念是目前非常受关注的。经过数亿年的趋同演化，巨大的自然结构展现出迷人的机械性能。Odontodactylus scylarus，被称为孔雀螳螂虾，其指尖攻击被认为是自然界中发现的最快和最强大的生物之一，具有作为优秀仿生保护系统的巨大潜力。在本文中，提出了一种新型轻量级仿生双正弦波纹（DSC）夹层结构，以提高抗冲击性。仿生双向正弦波纹芯夹芯板的面外均匀压缩已在准静态破碎载荷下进行。与规则三角形和正弦波芯夹芯板相比，仿生DSC夹芯板显着提高了结构耐撞性，同时大大降低了初始峰值力。最后，研究了波幅、波数和波纹芯层厚度对仿生DSC夹芯板力学性能的影响，以寻求合适的结构参数来优化能量吸收行为。