仿甲虫鞘翅轻质结构及其参数优化设计

为研发新型轻质结构,在对甲虫鞘翅断面微结构进行观测的基础上,分析了甲虫鞘翅的微观结构特征,并据此设计和制备了基于碳纤维/环氧树脂复合材料的仿生轻质结构。对仿生轻质结构进行准静态压缩试验,同时利用有限元法对仿生轻质结构进行压缩性能分析,并将分析结果与试验结果进行对比,证明了有限元分析的正确性和可靠性。在此基础上进一步利用响应面法对仿生轻质结构进行参数优化设计。结果显示:压缩载荷下仿生轻质结构的最大承载力为18 455.00N,较优化前结构的提高了26.4%,压缩比强度为47.43 MPa/(g·cm-3),优化效果显著。

A lightweight structure inspired by beetle's elytra and its optimum design of parameters

In order to develop novel lightweight structure, based on the observation of the cross-sectional microstructure of beetle's elytra, the morphological features of beetle's elytra were analyzed, hereby a bio-inspired lightweight structure made by carbon fiber/epoxy composites was designed. The quasi-static compression test was carried out on bio-inspired lightweight structure, and finite element method was used at the same time to analyse the compressive ability of bio-inspired lightweight structure. The analytical results and the test results were compared, which proved the correctness and effectiveness of the finite element analysis. In addition, the optimum design of parameters of the bio-inspired lightweight structure was conducted by response surface method. The results reveal the maximum bearing capacity of bio-inspired lightweight structure under compressive load reaches 18 455.00 N, which increased by 26.4% compared with the structure before optimization, and its specific compressive strength reaches 47.43 MPa/(g·cm^-3), the optimal effect is remarkable.