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首页> 外文期刊>International Journal of Mechanical Sciences >Numerical, theoretical, and experimental studies on the energy absorption of the thin-walled structures with bio-inspired constituent element
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Numerical, theoretical, and experimental studies on the energy absorption of the thin-walled structures with bio-inspired constituent element

机译:生物启发成分元素薄壁结构能量吸收的数值,理论和实验研究

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摘要

Nowadays, more bio-inspired structures were proposed and adapted in structural designs to improve their energy absorbing performance. In this paper, a bio-inspired constituent element (BCE) consisting of a hollow cylindrical tube with four panels was studied. Quasi-static tests were conducted to evaluate its energy-absorbing performance using specimens with a thin-walled square tube. A FE model was developed and validated in favorable agreement with the experimental data. Using the FE model, a parametric study of the energy absorbing capability and deformed pattern of the BCE was conducted. The specific energy absorption (SEA) of the BCE is higher than that of traditional angle elements and significantly affected by the wall thickness, radius of cylindrical tube and number of intersecting panels. Finally, analytical (or theoretical) formulae for estimating the mean crushing force of the BCE was derived and correlated favorably with the experimental data.
机译:如今,提出了更多的生物启发结构,并适用于结构设计,以提高其能量吸收性能。 本文研究了由具有四面板的中空圆柱管组成的生物启发的构成元件(BCE)。 进行准静态试验以评估其具有薄壁方向管的样品的能量吸收性能。 与实验数据有利一致,开发并验证了FE模型。 使用Fe模型,进行了对能量吸收能力和BCE变形图案的参数研究。 BCE的特定能量吸收(海)高于传统角度元素的能量吸收(海),并且受到壁厚,圆柱形管道半径和交叉面板的数量显着影响。 最后,通过实验数据衍生并估计BCE的平均破碎力的分析(或理论)公式。

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