Sun Yingqiu, Guo Fan, Liu Yangyang
School of Electrical Engineering, Chuzhou Polytechnic, Chuzhou 239000, China.
School of Engineering, Anhui Agricultural University, Hefei 230036, China.
Biomimetics (Basel). 2025 Aug 12;10(8):528. doi: 10.3390/biomimetics10080528.
Inspired by the evolutionary optimization of biological load-bearing systems, honeycomb structures are highly valued in applications involving impact protection and lightweight load-bearing due to their outstanding mechanical properties. This study introduces an interesting honeycomb structure known as the hybrid topological cellular honeycomb structure (HTCHS), which integrates four distinctive topological cells. To effectively fabricate HTCHS samples, the research utilized a fused deposition modeling (FDM) process, employing polyethylene terephthalate glycol-modified (PETG) as the matrix material, successfully producing the HTCHS samples. A finite element simulation model for the HTCHS is created using LS-DYNA software(LS-DYNA R11.1.0 software), and its accuracy is confirmed through a comparative analysis of experimental and simulation results. The influence of the topological cell parameters ( to ) on compressive energy absorption, specific energy absorption, and peak crushing force through parametric modeling is investigated. The mechanical properties of honeycomb structures vary depending on the cell parameters at different positions, and monotonically increasing the design parameters does not improve the energy absorption capacity of the HTCHS. To enhance the mechanical performance of the HTCHS, the initial periodic cell configurations are transformed into non-periodic designs. A discrete optimization design framework for local parameters of the HTCHS is established, integrating cell coding with the MOPSO algorithm. The feasibility of the optimization results is validated through experimental data, demonstrating that this study offers an effective technical solution for developing a novel generation of cellular honeycomb structures with customizable mechanical properties.
受生物承重系统进化优化的启发，蜂窝结构因其出色的力学性能，在涉及冲击防护和轻质承重的应用中备受重视。本研究介绍了一种有趣的蜂窝结构，即混合拓扑胞元蜂窝结构（HTCHS），它整合了四种独特的拓扑胞元。为有效制造HTCHS样品，该研究采用熔融沉积建模（FDM）工艺，使用聚对苯二甲酸乙二醇酯二醇改性（PETG）作为基体材料，成功制备出HTCHS样品。利用LS-DYNA软件（LS-DYNA R11.1.0软件）创建了HTCHS的有限元模拟模型，并通过实验结果与模拟结果的对比分析验证了其准确性。通过参数化建模研究了拓扑胞元参数（to）对压缩能量吸收、比能量吸收和峰值破碎力的影响。蜂窝结构的力学性能因不同位置的胞元参数而异，单调增加设计参数并不能提高HTCHS的能量吸收能力。为提高HTCHS的力学性能，将初始周期性胞元构型转变为非周期性设计。建立了HTCHS局部参数的离散优化设计框架，将胞元编码与多目标粒子群优化（MOPSO）算法相结合。通过实验数据验证了优化结果的可行性，表明本研究为开发具有可定制力学性能的新一代胞元蜂窝结构提供了有效的技术解决方案。
