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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Investigation on crushing behavior of laminated conical absorbers with different arrangements under axial loading
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Investigation on crushing behavior of laminated conical absorbers with different arrangements under axial loading

机译：轴向载荷作用下不同排列形式的叠层圆锥形吸收器的抗压性能研究

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摘要

In this paper, the crushing properties of conical tubes made of stainless steel 430 have been investigated with different arrangements under quasi-static axial load both experimentally and numerically. For numerical investigation, nonlinear finite element method simulation is conducted using LS-Dyna software. In the experimental tests, the specimens with the height, major diameter, minor diameter and thickness of 150, 70, 50 and 1 mm are considered, respectively. Different combinations of layers are prepared using different cross-sections. A total of seven different arrangements have been designed in three distinct groups with constant mass and the crushing behavior has been extracted for them. To ensure the validity of the simulation results, several specimens which have the thickness of 1 mm have been tested experimentally. Comparing the results indicates the consistency of the experimental and numerical data. According to the obtained results, it is observed that with increasing the number of layers, the energy absorption capacity is increased; moreover, the peak load is increased by 75.2%. In fact, with increasing the number of layers, increasing trend is observed in peak load, and contrary to the initial expectations, this trend is not linear. It is also observed that by changing the layer arrangement and the layer number, the mean crushing force can increase approximately three times.
机译：本文通过实验和数值研究了在准静态轴向载荷下采用不同布置的不锈钢430锥形管的破碎性能。为了进行数值研究，使用LS-Dyna软件进行了非线性有限元方法仿真。在实验测试中，分别考虑了高度，大直径，次直径和厚度分别为150、70、50和1 mm的试样。使用不同的横截面制备不同的层组合。在恒定质量的三个不同组中设计了总共七个不同的布置，并为其提取了破碎行为。为了确保模拟结果的有效性，已经对几个厚度为1 mm的样本进行了实验测试。比较结果表明实验和数值数据的一致性。根据所获得的结果，观察到随着层数的增加，能量吸收能力增加;能量吸收能力增加。此外，峰值负载增加了75.2％。实际上，随着层数的增加，在峰值负载中观察到增加的趋势，并且与最初的预期相反，该趋势不是线性的。还观察到，通过改变层的布置和层数，平均压碎力可以增加大约三倍。

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