| 摘要: |
| 目的 为了提高能量吸收效率， 设置出一种合理的诱导结构， 对吸能构件产生积极影响。方法薄壁圆管设计一种环向圆弧刻槽诱导结构， 在不同长径比、 径厚比和刻槽深度的条件下研究薄壁结构吸能特性。结果 吸能量与圆管长径比和径厚比成反比， 初始压溃载荷随刻槽深度增加而减小。结论 在不同的条件下， 刻槽结构能够有效降低初始载荷， 并获得较为平稳的压溃载荷平台。 |
| 关键词: 薄壁圆管 刻槽 轴向压溃 吸能 |
| DOI： |
| 分类号:TH123.1 |
| 基金项目:2015年中国工程物理研究院总体工程研究所创新与发展基金 （15CXJJ27） |
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| Numerical Investigation on Energy Absorption Characteristics of Thin-Walled Circular Tube with Groove under Axial Crushing |
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LI Fei, ZHANG Kai, WEN Jin-peng
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Institute Systems of Engineering，China Academy of Engineering Physics，Mianyang 621900，China
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| Abstract: |
| In order to improve the efficiency of energy absorption, a reasonable induced structure was designed to produce positive impact on energy absorption components. A circular arc induced structure was designed for thin-walled pipe, and its energy absorption characteristics were studied under different length to diameter ratios, diameter thickness ratios and the depth of the groove. The simulation results showed that the energy absorption moved in opposite direction with the change of length to diameter ratio and diameter-thick ratio. And with the increase of groove depth, the initial crushing load decreased. The initial load was efficiently reduced by using groove induced structure under different conditions, and a relatively stable crushing load platform was obtained. |
| Key words: thin-walled circular tube groove axial crushing energy absorption |
