Impact resistant basalt fiber-reinforced aluminum laminate with Janus helical structures inspired by lobster and mantis shrimp
Impact resistant basalt fiber-reinforced aluminum laminate with Janus helical structures inspired by lobster and mantis shrimp
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DOI：
10.1016/j.compstruct.2022.115551
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发表时间：
2022-04-28
影响因子：
6.3
通讯作者：
Han, Zhiwu
中科院分区：
文献类型：
--
作者：
Han, Qigang;Li, Hongmeng;Han, Zhiwu
纤维金属层合板（FML）是一种轻质高强材料，广泛应用于飞机结构件中以减轻重量和提高力学性能。然而，将优异的结构失效容限性能和上级应力耗散能力有效地整合到一种FML材料中仍然是一个巨大的挑战。本文以龙虾的非线性螺旋结构和螳螂虾的线性螺旋结构为灵感，采用热压成型的方法，设计并制造了一种具有Janus螺旋结构的新型仿生FML。然后进行了低速冲击试验，以评价其抗冲击性能。值得注意的是，在40 J的冲击能量下，生物启发Janus FML（BJFML）的峰值冲击力为8216.36 N，与传统交叉层FML（CPFML）的7454.52 N相比增加了10.22%。此外，BJFML的凹痕深度（5.95 mm）比CPFML的凹痕深度（8.29 mm）减少了28.23%。最后，对该结构进行了系统的有限元模拟。事实上，非线性螺旋布置极大地阻碍了裂纹扩展，并且周期性线性结构改善了其对冲击力的负载可承受性，从而改善了结构失效容限，加强了应力耗散，并且协同地增强了抗冲击性。
Fiber metal laminate (FML) is an extremely strong and light material that is widely applied in the structural components of aircraft for weight reduction and improving mechanical properties. However, the effective integration of excellent structural failure tolerance property and superior stress dissipation capacity into one FML material remains a huge challenge. Herein, inspired by the non-linear helical structure of lobster and the linear helical structure of mantis shrimp, a novel bioinspired FML with Janus helical structure was designed and manufactured through the method of hot press forming. Afterwards, low velocity impact tests were carried out to evaluate the impact resistant property. Remarkably, the peak impact force of the bioinspired Janus FML (BJFML) at the impact energy of 40 J was 8216.36 N, which increased by 10.22% compared with the 7454.52 N of traditional cross-ply FML (CPFML). Moreover, the dent depth of the BJFML (5.95 mm) decreased by 28.23% compared with that of CPFML (8.29 mm). Finally, the finite element simulation was conducted systematically. In fact, the non-linear helical arrangement greatly hindered crack propagation and the periodic linear structure improved its load homogenizing ability for impact forces, thus improving structural failure tolerance, strengthening stress dissipation, and synergistically enhancing the impact resistance.