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Acta Armamentarii ›› 2023, Vol. 44 ›› Issue (3): 876-885.doi: 10.12382/bgxb.2021.0732

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Cushioning Energy Absorption of Four-layered Composite Tubes with Regular Pentagon and Hexagon Cross-sections under Axial Drop Impact

CHEN Shenghui(), GUO Yanfeng(), FU Yungang(), MA Xiaojiao(), QIN Fang()   

  1. Department of Packaging Engineering, Xi’an University of Technology, Xi’an 710048, Shaanxi, China
  • Received:2021-11-01 Online:2022-07-04

Abstract:

The paper corrugation sandwich tube provides an innovative solution to deal with impact. For the polyethylene foam double-filled configuration of paper corrugation sandwich tube, the energy absorption of the four-layered tube and the influence of geometrical and loading parameters are investigated through comparison tests of axial drop impact and parametric analysis. According to the results, the length of plastic plateau of the X-direction corrugation sandwich double-tube with double-filling is much longer than that of the Y-direction double-tube, and the energy absorption of the former is better than that of the latter. The specific energy absorption, unit volume energy absorption, specific total efficiency, and average crushing stress of the double-tube with double-filling decrease as a whole with the increase of the edge number of the tube. Whereas, as the mass of the drop hamper increases, the energy absorption of the tube increases. For the tube length ratio of 3.0, the total energy absorption and specific energy absorption of the X-direction regular pentagonal double-tube increase by 15.6% and 48.8%, respectively, compared with those of the hexagonal tube; the numbers for Y-direction double-tube are 14.4% and 47.9%. The double-tube with a tube length ratio of 2.2 has better higher impact resistance and initial peak stress than those with tube length ratios of 1.4 and 3.0.

Key words: paper corrugation sandwich double-tube, polyethylene foam, double-filling, axial drop impact, cushioning energy absorption