| 唐唯高,郭彦峰*,潘丹,付云岗,康健芬.纸瓦楞管轴向跌落冲击缓冲吸能特性实验研究[J].实验力学,2020,35(3):491~502 |
| 纸瓦楞管轴向跌落冲击缓冲吸能特性实验研究 |
| Experimental study on cushioning energy absorption of paper corrugation tubes under axial drop impact |
| 投稿时间：2018-09-01 修订日期：2018-10-25 |
| DOI：10.7520/1001-4888-18-199 |
| 中文关键词: 纸瓦楞管 跌落冲击 动态压缩 变形模式 缓冲吸能 |
| 英文关键词:paper corrugation tubes drop impact dynamic compression deformation mode cushioning energy absorption |
| 基金项目:国家自然科学基金项目(51345008)；西安市科技计划项目(2017080CG/RC043(XALG024)); 陕西省重点研发计划一般项目(2018GY-191) |
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| 中文摘要: |
| 纸瓦楞管是一种适用于军工/民用产品的新型缓冲防护与吸能装置,本文研究了4种正多边形纸瓦楞管在轴向跌落冲击条件下的动态压缩特性、结构参数和载荷参数对缓冲吸能特性的影响规律,结果表明，对于相同的跌落冲击载荷条件，X向纸瓦楞管发生稳定的手风琴变形模式，而Y向纸瓦楞管主要是稳态渐进屈曲变形模式与其他非理想变形模式的混合形式。X向纸瓦楞管的峰值应力低、褶皱个数较多，变形模式稳定可控，缓冲吸能特性优于Y向纸瓦楞管。随着正多边形横截面边数的增加，纸瓦楞管的总吸能变化不明显，而其他的缓冲吸能特性参数都明显下降。管长度对纸瓦楞管缓冲吸能特性影响明显，X向、Y向纸瓦楞管的总吸能随着管长度的增加而提高26.8%、70.2%，单位面积吸能增加32.2%、63.1%，但比吸能下降66.7%、34.8%，行程利用率下降10.5%、51.5%。纸瓦楞管的缓冲吸能特性参数都随着冲击质量的增加而基本上接近于线性递增关系，而随着跌落冲击能量的增加，总吸能、单位面积吸能和比吸能均有两个较小的下降，行程利用率呈现递增趋势。 |
| 英文摘要: |
| The paper corrugation tube is a new type of cushioning protection and energy absorption device suitable for military and civil products. In this work, the dynamic compression characteristics of four normal polygonal paper corrugation tubes under conditions of axial drop impact and the influence rules of structural and load parameters on the dynamic cushioning energy absorption characteristics are studied. The results show that, for the same condition of drop impact, the deformation of X-direction paper corrugation has a stable accordion mode, while the deformation of Y-direction paper corrugation exhibits a mixture of steady progressive buckling deformation mode and other non-ideal modes. In comparison with the Y-direction paper corrugation tube, the X-direction paper corrugation tube has a lower peak stress value, a stable and controllable deformation mode with multiple folds, and higher total energy absorption, unit area energy absorption, specific energy absorption and travel utilization ratio. The change of cross section shape of X-direction paper corrugation tubes hardly influences the total energy absorption. However, as the number of cross section edges of the tubes increases, the total energy absorption of Y-direction paper corrugation tube rises obviously, while the energy absorption per unit area, specific energy absorption and travel utilization ratio decrease. The length of the tube has a significant impact on the cushioning energy absorption characteristics of the paper corrugation tube. As the length of the tube increases, the total energy absorption of the X-direction and Y-direction paper corrugation tubes are increased by 26.8% and 70.2%, respectively, the energy absorption per unit area increase by 32.2% and 63.1%, respectively, but the specific energy absorption decreases by 66.7% and 34.8%, respectively, and the travel utilization rate decreases by 10.5% and 51.5%, respectively. On one hand, with the increase of impact block mass, the total energy absorption, unit area energy absorption, specific energy absorption and travel utilization rate of the paper corrugation tubes increase nearly linearly. On the other hand, with the increase of impact energy, the total energy absorption, unit area energy absorption and specific energy absorption of paper corrugation tubes show two smaller downward trends, while the remaining energy absorption parameters show an increasing trend. |
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