A numerical study on the impact response and energy absorption of tapered thin-walled tubes
A numerical study on the impact response and energy absorption of tapered thin-walled tubes
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DOI：
10.1016/j.ijmecsci.2004.03.006
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发表时间：
2004-02-01
影响因子：
7.3
通讯作者：
Thambiratnam, DP
中科院分区：
文献类型：
--
作者：
Nagel, GM;Thambiratnam, DP
锥形管由于其在动态载荷下相对稳定的平均载荷-挠度响应而被认为是理想的冲击能量吸收器。与直管相比，关于锥形管能量吸收性能的研究报道相对较少。本文比较了直薄壁矩形管和锥形薄壁矩形管在准静态和动态轴向冲击载荷下的能量吸收响应，包括壁厚、锥角、冲击质量和冲击速度的变化。结果表明，在较低的冲击速度下，锥形管的动态响应对冲击速度和壁厚的敏感性大于对锥角的敏感性。惯性效应影响直管和锥形管的动态响应，但后者不太重要。总体而言，结果表明，锥形管的能量吸收响应可以通过其壁厚和锥角来控制，这突出了它们作为能量吸收器的潜力。分析已经进行了使用有限元模型，使用现有的理论进行验证。(C)2004爱思唯尔有限公司保留所有权利。
Tapered tubes have been considered desirable impact energy absorbers due to their relatively stable mean load-deflection response under dynamic loading. Relatively few studies have been reported on the energy absorption performance of tapered tubes compared with straight tubes. This paper compares the energy absorption response of straight and tapered thin-walled rectangular tubes under both quasi-static and dynamic axial impact loading, for variations in wall thickness, taper angle, impact mass and impact velocity. It is found that the dynamic response of tapered tubes is more sensitive to impact velocity and wall thickness than taper angle for lower impact velocities. Inertia effects influenced the dynamic response for both straight and tapered tubes, yet were less significant for the latter. Overall, the results indicate that the energy absorption response of tapered tubes can be controlled via their wall thickness and taper angle, and this highlights their potential for use as energy absorbers. Analysis has been undertaken using a finite element model, validated using existing theory. (C) 2004 Elsevier Ltd. All rights reserved.