Abstract The paper corrugation tube is an attractive and innovative mode of cushioning protection and energy absorption for the general protection and packaging technology of military and civil products. The aims of this paper focus on the dynamic compression characteristics of four kinds of regular polygonal paper corrugation tubes under the conditions of axial drop impacts, and the influence rules of structural parameters and load parameters on the dynamic cushioning energy absorption. The results show that, the tube direction has a crucial effect on the deformation mode of the paper corrugation tubes, the deformation of X-direction paper corrugation tubes has a stable accordion mode, but that of Y-direction paper corrugation tubes is a mixture of steady progressive buckling and other non-ideal modes. The X-direction paper corrugation tubes have lower peak stress, stable and controllable deformation mode with multiple folds, and higher total energy absorption, unit area energy absorption, specific energy absorption and stroke efficiency than the Y-direction paper corrugation tubes. Moreover, the change of cross-section shape of X-direction paper corrugation tubes has no obvious influence on the total energy absorption, while the total energy absorption of Y-direction paper corrugation tube obviously rises with the increase of the number of cross-section edges of the tubes, but the unit area energy absorption, specific energy absorption and stroke efficiency decrease with the increase of the number of cross-section edges of the tubes. Moreover, the increase of the number of cross-section edges of the tubes made the total energy absorption of Y-direction tubes rise, while the total energy absorption of X-direction tubes has no obvious change. But the unit area energy absorption, specific energy absorption and stroke efficiency decrease with the increase of the number of cross-section edges of the tubes. Furthermore, the tube length, impact block mass and impact energy have also important influence on the cushioning energy absorption of the paper corrugation tubes under axial drop impact.

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正多边形纸波纹管在轴向跌落冲击下的缓冲吸能

摘要 纸波纹管是军用和民用产品通用保护和包装技术中一种极具吸引力的缓冲保护和吸能创新模式。本文的目的主要是研究了四种正多边形纸波纹管在轴向跌落冲击条件下的动态压缩特性，以及结构参数和载荷参数对动态缓冲吸能的影响规律。结果表明，管材方向对纸波纹管的变形方式有决定性影响，X方向纸波纹管的变形具有稳定的手风琴模式，而Y方向纸波纹管的变形是混合的。稳定渐进屈曲和其他非理想模式。X向纸波纹管峰值应力较低，多次折叠变形方式稳定可控，总能量吸收、单位面积能量吸收、比能量吸收和行程效率均高于Y向纸波纹管。而且，X向纸波纹管横截面形状的变化对总能量吸收没有明显影响，而Y向纸波纹管的总能量吸收随着横截面数量的增加而明显上升。但单位面积吸能、比吸能和冲程效率随着管截面边数的增加而降低。而且，管子横截面边数的增加使得Y向管的总吸能增加，而X向管的总吸能没有明显变化。但单位面积吸能、比吸能和冲程效率随着管子横截面边数的增加而降低。此外，管长、冲击块质量和冲击能量对纸波纹管在轴向跌落冲击下的缓冲能量吸收也有重要影响。