Performance of tri-tubular conical energy absorber under axial compression

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-30 DOI:10.15282/jmes.18.1.2024.6.0781

Asad Khalid, S. M. Rohaizan

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引用次数: 0

Abstract

Quasi static axial compression loading on tri-tubular cone (TC) has been carried out using LS-DYNA finite element analysis method. Tri-tubular cones of three arrangements; the first arrangement (model TC-1) consists of cone heights of 50 mm, 75 mm and 100 mm where the inner cone is the maximum height. The second arrangement (model TC-2) consists of cone heights of 100 mm, 75 mm, and 50 mm where the outer cone is the maximum height. The third arrangement (model TC-3) consists of three cones of the same height of 100 mm. Cone semi vertex angle of 20o was maintained for all tri-tubular cones tested. Materials used for this research are glass, jute and jute-glass/epoxy. Crashworthiness analyses were performed to investigate the effect of material used, and tri-tubular cone arrangement on peak load. Crush efficiency, and absorbed energy were drawn and discussed. Failure mechanism of the fractured specimens was also discussed. Effect of number of layers and fiber stacking sequence were also investigated. Results show that the cone arrangement TC-3 gives better performance than the cone arrangement TC-2 followed by the cone arrangement TC-1. Maximum load obtained by tri-tubular cone type TC-3 was found higher 7.09% and 14.96% than TC-2 and TC-1 respectively for glass/epoxy. Material saving was achieved by using tri-tubular cones of different heights under compression. Material used has significant influence on the absorbed energy. Failure mode of tri-tubular conical energy absorber was presented and discussed.

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三管锥形能量吸收器在轴向压缩下的性能

使用 LS-DYNA 有限元分析方法对三管状锥体 (TC) 进行了准静态轴向压缩加载。三管状锥体有三种排列方式：第一种排列方式（TC-1 型）的锥体高度分别为 50 毫米、75 毫米和 100 毫米，其中内锥体为最大高度。第二种布置（TC-2 型）的锥体高度分别为 100 毫米、75 毫米和 50 毫米，其中外锥体为最大高度。第三种布置（TC-3 型）由三个高度相同的锥体组成，高度均为 100 毫米。所有测试的三管锥体的半顶角都保持在 20o。本研究使用的材料有玻璃、黄麻和黄麻-玻璃/环氧树脂。进行了耐撞性分析，以研究所用材料和三管锥体排列对峰值载荷的影响。得出并讨论了挤压效率和吸收能量。还讨论了断裂试样的失效机理。此外，还研究了层数和纤维堆叠顺序的影响。结果表明，锥形排列 TC-3 比锥形排列 TC-2 性能更好，其次是锥形排列 TC-1。对于玻璃/环氧树脂，TC-3 型三管锥获得的最大载荷分别比 TC-2 和 TC-1 高出 7.09% 和 14.96%。使用不同高度的三管锥体进行压缩可以节省材料。所用材料对吸收的能量有很大影响。介绍并讨论了三管锥形能量吸收器的失效模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.