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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。
In order to develop a new lightweight structure, the microstructure characteristics of beetle coleoptile were analyzed based on the observation of the microstructure of beetle coleoptile, and the bionic lightweight structure based on carbon fiber / epoxy composites was designed and prepared. The quasi-static compression test of the bionic lightweight structure is carried out. Meanwhile, the compression performance of the bionic lightweight structure is analyzed by the finite element method. The analysis results are compared with the test results, which proves the correctness and reliability of the finite element analysis. On the basis of this, the parameter optimization design of bionic lightweight structure is further made using response surface method. The results show that the maximum bearing capacity of bionic lightweight structure under compression load is 18 455.00N, which is 26.4% higher than that before optimization and the compressive strength is 47.43 MPa / (g · cm-3). The optimization results are obvious.