复合材料/铝复合管轴向准静态及冲击压溃的吸能特性

袁潘;杨智春

振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 209-213.

PDF(2125 KB)
PDF(2125 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 209-213.
论文

复合材料/铝复合管轴向准静态及冲击压溃的吸能特性

  • 袁潘; 杨智春
作者信息 +

Numerical study on the energy absorption of aluminum-composite hybrid tubes under axial quasi-static and impact crushing

  • Yuan Pan ; Yang Zhichun
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摘要

用数值模拟方法,研究了方形和圆形截面的复合材料/铝复合管在轴向准静态及冲击压溃下的吸能特性,计算得到压溃力-位移曲线。通过将一组方形截面复合管在准静态压溃条件下的计算结果与文献的实验数据进行对比,以验证有限元模型和参数设置的正确性。在铝管的管厚、管长以及截面外周长相同,缠绕不同厚度的复合材料情况下,对比分析了方形和圆形截面复合管在准静态及冲击压溃条件下的轴向压溃吸能特性。结果表明,复合管的截面构型对其吸能效果影响很大,在轴向准静态压溃条件下,圆形截面复合管吸能能力要强于方形截面复合管;冲击压溃吸能量不但与结构自身吸能力有关,还受到外界冲击大小的影响。在设计复合材料层厚度时,需要控制复合管的刚度,避免回弹造成吸能量的降低。

Abstract

LS-DYNA explicit finite element code was ueed to perform a numerical investigation on the energy absorption behavior of aluminum-composite square and circular hybrid tubes under axial quasi-static and impact crushing. The force-displacement curve, which describes the energy capability of the structure, was obtained. The finite element model was verified by comparing the numerical results of one square hybrid tube with the experiment data from the reference under quasi-static crushing. Based on this model, parametric study was conducted to determine the effect of different winding thickness of composite material on energy absorption behavior of square and circular tubes with the same tube length, thickness and outer perimeter The results show that the cross-sectional configuration of hybrid tubes has a great effect on energy absorption capability. More energy is absorbed by circular hybrid tubes than by square hybrid tubes under axial quasi-static crushing. The energy absorbed by impact crushing is not only related to its energy absorption capability, but also affected by the impact intensity. It is necessary to control the stiffness of the hybrid tubes in the design of composite thickness, avoiding reduction of energy absorption caused by hybrid tubes resilience.

关键词

复合材料结构 / 复合管 / 准静态压溃 / 冲击压溃

Key words

composite structure / hybrid tube / quasi-static crushing / impact crushing

引用本文

导出引用
袁潘;杨智春. 复合材料/铝复合管轴向准静态及冲击压溃的吸能特性[J]. 振动与冲击, 2010, 29(8): 209-213
Yuan Pan;Yang Zhichun. Numerical study on the energy absorption of aluminum-composite hybrid tubes under axial quasi-static and impact crushing[J]. Journal of Vibration and Shock, 2010, 29(8): 209-213

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