Feng Xiaodi, Ma Siqi, Fu Shuai, Wei Jiacheng, Liu Junyan, Yang Fei, Yue Honghao, Lu Yifan
State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China.
Center for Advancing Electronics Dresden (cfaed) & Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany.
Small. 2025 Apr;21(15):e2411205. doi: 10.1002/smll.202411205. Epub 2025 Mar 3.
Lightweight, hierarchical thin-walled tubes are essential in aerospace and transportation for their exceptional impact resistance and energy absorption capabilities. This study applies bionic design principles to revolutionize traditional thin-walled tube structures, enhancing their energy absorption performance. Inspired by natural models-spider webs, beetle elytra, cuttlebone, and spiral wood fibers-integrated bionic hierarchical thin-walled tubes (IBHTTs) with diverse bionic structural and material combinations are developed using additive manufacturing. Mechanical tests and simulations demonstrated distinct deformation behaviors and significant performance enhancements. An IBHTT incorporating spider web, beetle elytra, and cuttlebone-inspired designs achieved a 129.7% increase in absorbed energy (EA) and a 21.8% improvement in specific energy absorption(SEA) compared to conventional tubes. Introducing spiral wood fiber-inspired features further improved toughness under compression and impact, with helical formations enabling mutual squeezing and self-twisting, resulting in a 397.5% increase in absorbed energy and a 67.0% boost in specific energy absorption. Furthermore, IBHTTs with adjustable helical angles exhibited distinct mechanical and energy absorption characteristics, enabling tailored compressive responses through custom spiral configurations. These findings lay the groundwork for designing advanced thin-walled tubes to meet diverse application demands, pushing the boundaries of bionic engineering.
轻质、分层薄壁管因其卓越的抗冲击性和能量吸收能力在航空航天和交通运输领域至关重要。本研究应用仿生设计原理对传统薄壁管结构进行革新，提升其能量吸收性能。受自然模型——蜘蛛网、甲虫鞘翅、乌贼骨和螺旋木纤维——的启发，利用增材制造技术开发出具有多种仿生结构和材料组合的集成仿生分层薄壁管（IBHTT）。力学测试和模拟展示了其独特的变形行为和显著的性能提升。与传统管材相比，一种融合了蜘蛛网、甲虫鞘翅和乌贼骨启发设计的IBHTT吸收能量（EA）增加了129.7%，比能吸收（SEA）提高了21.8%。引入螺旋木纤维启发的特征进一步改善了压缩和冲击下的韧性，螺旋结构能够相互挤压和自扭转，使吸收能量增加了397.5%，比能吸收提高了67.0%。此外，具有可调节螺旋角的IBHTT表现出独特的力学和能量吸收特性，通过定制螺旋构型能够实现定制的压缩响应。这些发现为设计满足各种应用需求的先进薄壁管奠定了基础，推动了仿生工程的发展。
