Li Jie, Wang Han, Kong Xianghao, Jiao Zhiwei, Yang Weimin
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 15 East North Third Ring Road, Beijing 100029, China.
China Academy of Safety Science and Technology, Security Building, Building A 1, 32 Beiyuan Road, Chaoyang District, Beijing 100012, China.
Materials (Basel). 2024 May 11;17(10):2274. doi: 10.3390/ma17102274.
The rapid development of additive manufacturing (AM) has facilitated the creation of bionic lightweight, energy-absorbing structures, enabling the implementation of more sophisticated internal structural designs. For protective structures, the utilization of artificially controlled deformation patterns can effectively reduce uncertainties arising from random structural damage and enhance deformation stability. This paper proposed a bionic corrugated lightweight honeycomb structure with controllable deformation. The force on the onset state of deformation of the overall structure was investigated, and the possibility of controlled deformation in the homogeneous structure was compared with that in the corrugated structure. The corrugated structures exhibited a second load-bearing capacity wave peak, with the load-bearing capacity reaching 60.7% to 117.29% of the first load-bearing peak. The damage morphology of the corrugated structure still maintained relative integrity. In terms of energy absorption capacity, the corrugated lightweight structure has a much stronger energy absorption capacity than the homogeneous structure due to the second peak of the load carrying capacity. The findings of this study suggested that the combination of geometric customization and longitudinal corrugation through additive manufacturing offers a promising approach for the development of high-performance energy-absorbing structures.
增材制造（AM）的快速发展推动了仿生轻质、能量吸收结构的创建，使得更复杂的内部结构设计得以实现。对于防护结构而言，利用人工控制的变形模式能够有效减少随机结构损伤产生的不确定性，并增强变形稳定性。本文提出了一种具有可控变形的仿生波纹轻质蜂窝结构。研究了整体结构变形起始状态下的受力情况，并比较了均匀结构和波纹结构中可控变形的可能性。波纹结构呈现出第二个承载能力波峰，其承载能力达到第一个承载峰值的60.7%至117.29%。波纹结构的损伤形态仍保持相对完整性。在能量吸收能力方面，由于承载能力的第二个峰值，波纹轻质结构比均匀结构具有更强的能量吸收能力。本研究结果表明，通过增材制造实现几何定制与纵向波纹相结合，为高性能能量吸收结构的开发提供了一种有前景的方法。
