Wang Shijie, Xia Hongxiang
College of Civil and Architectural Engineering, Heilongjiang Institute of Technology, Harbin 150050, China.
School of Civil Engineering, Northeast Forestry University, Harbin 150040, China.
Biomimetics (Basel). 2023 Feb 9;8(1):73. doi: 10.3390/biomimetics8010073.
In order to protect the reinforced concrete (RC) slab structure from damage under some accidental conditions, such as impacting and explosion, we used bio-inspired honeycomb column thin-walled structure (BHTS) to serve as a buffer interlayer for the concrete structure inspired by the biological structure of beetle's elytra. The mechanical properties of AlSi10Mg used to fabricate the BHTS buffer interlayer were determined by low- and medium-speed uniaxial compression tests and numerical simulations. Subsequently, based on the drop weight impact test models, the effect of the buffer interlayer on the response of the RC slab under the drop weight tests with different energy input was compared by the impact force and duration, maximum displacement and residual displacement, energy absorption (EA), energy proportion, and other indicators. The results show that the proposed BHTS buffer interlayer has a very significant protection effect on the RC slab under the impact of the drop hammer. Due to its superior performance, the proposed BHTS buffer interlayer provides a promising solution for EA of augmented cellular structures widely used in defensive structural components, such as floor slabs, building walls, etc.
为了保护钢筋混凝土（RC）板结构在诸如撞击和爆炸等意外情况下不受损坏，我们采用受甲虫鞘翅生物结构启发的仿生蜂窝柱薄壁结构（BHTS）作为混凝土结构的缓冲夹层。通过低速和中速单轴压缩试验及数值模拟确定了用于制造BHTS缓冲夹层的AlSi10Mg的力学性能。随后，基于落锤冲击试验模型，通过冲击力和持续时间、最大位移和残余位移、能量吸收（EA）、能量比例等指标，比较了缓冲夹层在不同能量输入的落锤试验下对RC板响应的影响。结果表明，所提出的BHTS缓冲夹层在落锤冲击下对RC板具有非常显著的保护作用。由于其优越的性能，所提出的BHTS缓冲夹层为广泛应用于防御性结构部件（如楼板、建筑墙体等）的增强蜂窝结构的能量吸收提供了一种有前景的解决方案。
