.双直径圆管能量吸收元件的研究
Research on the dual-diameter tube energy-absorbing component
李伟，雷君相，汪奇超，朱彦
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作者单位：上海理工大学 材料成形与模具研究所
中文关键字：能量吸收；液压胀形；液压折叠；正交设计；吸能元件
英文关键字：energy absorption；hydraulic bulging；hydraulic folding；orthogonal experimental design；energy-absorbing component
中文摘要：本文针对碰撞安全的结构耐撞性要求，以圆管液压胀形和液压折叠原理为基础，对双直径圆管能量吸收元件进行了成形工艺设计。利用SPSS18.0对液压成形的各参数组合进行了正交设计，在ABAQUS中进行成形过程数值模拟，得出了最优参数组合，并分析了影响吸能元件成形厚度分布的主要因素。最后进行了碰撞仿真研究，结果表明双直径圆管能量吸收元件变形模式稳定、比耗能高、载荷平稳，是理想的吸能元件。
英文摘要： In this paper, according to the crashworthiness requirements of crash safety structure, basing of the tube hydraulic bulging and folding principles, designed the forming process of dual-diameter tube energy-absorbing component. Use the SPSS18.0 to do the orthogonal experimental design of all kinds parameters combination of hydroforming. In ABAQUS for forming process validation as well as numerical simulation on collision, then conclude that the optimal parameter combination. And analyzes the main factors of which impact the forming thickness distribution of energy-absorbing component. Research on the crash simulation shows that the energy-absorbing component has a stability deformation model and high specific dissipating energy, it’s a ideal energy-absorbing component.