Energy absorption of thin-walled multi-cell tubes with DNA-inspired helical ribs under quasi-static axial loading

IF 1.8 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Erhan Cetin
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Abstract

This study presents a pioneering investigation into the energy absorption characteristics of thin-walled multi-cell tubes with DNA-like helical ribs under axial loading, marking the first such exploration in the literature. By systematically varying key design parameters—inner diameter, number of spirals, and spiral turns—we aimed to optimize the energy absorption performance of these complex structures. A total of 27 geometrically intricate multi-cell tubes were fabricated using fused deposition modeling (FDM) and subjected to rigorous axial compression tests. Crashworthiness metrics, including energy absorption, specific energy absorption (SEA), mean crash force (MCF), peak crash force, and crash force efficiency (CFE), were meticulously analyzed. Signal-to-noise ratio analysis and ANOVA were employed to discern the influence of design factors on these metrics. The findings revealed that the number of spirals significantly dictates the energy absorption capacity, with inner diameter exerting the least influence. Specifically, the inner diameter, spiral number, and spiral turns contributed 0.96%, 71.69%, and 17.69% to MCF; 13.03%, 59.22%, and 13.17% to SEA; and 0.13%, 47.39%, and 13.11% to CFE, respectively. Notably, the optimal selection of spiral and inner diameter parameters enhanced the SEA and CFE of the tubes by up to 166.62% and 169.70%, respectively. These results underscore the critical role of helical design in augmenting the crashworthiness of thin-walled multi-cell structures.

Abstract Image

在准静态轴向载荷下,带有 DNA 螺旋肋的薄壁多孔管的能量吸收
本研究开创性地研究了带有 DNA 螺旋肋的薄壁多孔管在轴向载荷作用下的能量吸收特性,这在文献中尚属首次。通过系统地改变关键设计参数--内径、螺旋数和螺旋转数,我们旨在优化这些复杂结构的能量吸收性能。我们使用熔融沉积建模技术(FDM)制造了 27 个几何结构复杂的多孔管,并对其进行了严格的轴向压缩测试。对包括能量吸收、比能量吸收(SEA)、平均碰撞力(MCF)、峰值碰撞力和碰撞力效率(CFE)在内的耐撞性指标进行了细致分析。采用信噪比分析和方差分析来确定设计因素对这些指标的影响。研究结果表明,螺旋数量对能量吸收能力的影响很大,而内径的影响最小。具体来说,内径、螺旋数和螺旋圈数对 MCF 的影响分别为 0.96%、71.69% 和 17.69%;对 SEA 的影响分别为 13.03%、59.22% 和 13.17%;对 CFE 的影响分别为 0.13%、47.39% 和 13.11%。值得注意的是,螺旋参数和内径参数的优化选择使管道的 SEA 和 CFE 分别提高了 166.62% 和 169.70%。这些结果凸显了螺旋设计在增强薄壁多孔结构耐撞性方面的关键作用。
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来源期刊
CiteScore
3.60
自引率
13.60%
发文量
536
审稿时长
4.8 months
期刊介绍: The Journal of the Brazilian Society of Mechanical Sciences and Engineering publishes manuscripts on research, development and design related to science and technology in Mechanical Engineering. It is an interdisciplinary journal with interfaces to other branches of Engineering, as well as with Physics and Applied Mathematics. The Journal accepts manuscripts in four different formats: Full Length Articles, Review Articles, Book Reviews and Letters to the Editor. Interfaces with other branches of engineering, along with physics, applied mathematics and more Presents manuscripts on research, development and design related to science and technology in mechanical engineering.
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