为提高薄壁管结构的耐撞性和吸能性,根据竹子的微观结构和竹节结构特性,设计了3种具有节结构的仿生薄壁管.通过仿真分析得出:节数的增加不能提高其比吸能,但节可以起到引导变形的作用;10B薄壁管结构的比吸能是仿生管中最高的,为34.35 kJ/kg,较普通圆管提高了61.4%.对双节薄壁管12 YP的节结构进行优化,发现增大节的内径和倒角处理能够提高薄壁管的吸能特性.最后,通过落锤试验对仿生管进行冲击试验,与仿真结果进行对比,得出载荷曲线的趋势表现出一致性.%According to the characteristics of the microstructure and node of bamboo, three types of thin-walled structure with different inner structures were designed. The simulation results showed that the 10B structure had the greatest SEA (Specific Energy Absorption) of 34. 35 kJ/kg among the structures, which increased by 61. 4% than the circular tubes. Then the double nodes structure of 12 YP was optimized and the results showed that the inner diameter of the node had great effects on the energy absorption of thin-walled tube. In addition, the bionic structures were verified by drop weight test and the results demonstrated the consistency of the trend between the simulation and ex-periment.
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