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| Cushioning Energy Absorbing Characteristics of Paper Honeycomb Sandwich Tubes under Axial Drop Impacts |
| Received:April 08, 2020 |
| DOI：10.11981/j.issn.1000-6842.2021.01.52 |
| Key Words:paper honeycomb sandwich tube;static compression;axial drop impact;cushioning energy absorbing characteristics |
| Fund Project: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）。 |
| Author Name | Affiliation | Postcode | | WEI Qing | Department of Packaging Engineering， Xi'an University of Technology， Xi'an， Shaanxi Province， 710048 | 710048 | | GUO Yanfeng | Department of Packaging Engineering， Xi'an University of Technology， Xi'an， Shaanxi Province， 710048 | 710048 | | FU Yungang | Department of Packaging Engineering， Xi'an University of Technology， Xi'an， Shaanxi Province， 710048 | 710048 | | JI Meijuan | Department of Packaging Engineering， Xi'an University of Technology， Xi'an， Shaanxi Province， 710048 | 710048 | | HAN Xuxiang | Department of Packaging Engineering， Xi'an University of Technology， Xi'an， Shaanxi Province， 710048 | 710048 |
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| Abstract: |
| Paper honeycomb sandwich tube was proposed referring to the design concepts of polygonal tube and corrugation sandwich tube. The effects of tube direction， cross-section edge number， length ratio， and drop impact energy on the cushioning energy absorbing characteristics of regular polygon paper honeycomb sandwich tubes were investigated by axial static and drop impact compression tests. The results showed that the progressive buckling deformation mode of the honeycomb sandwich tube was obvious under axial static compression loading. The yielding strength of the X-direction tubes was 14.8% higher than that of the Y-direction tubes， while the crushing strength was 7.0% lower. With the increase in tube cross-section edge number， the stroke efficiency of the tubes showed increasing trend， while the specific energy absorption， crush force efficiency， and specific total efficiency all showed decreasing trends. Under the axial drop impact， the paper honeycomb sandwich tubes also emerged progressive buckling deformation mode， the specific energy absorption， specific total efficiency of the X-direction tubes with the cross-section shapes of regular quadrilateral， pentagon and hexagon were higher than that of the Y-direction tubes， while the stroke efficiency was less. As the tube length ratio or cross-section edge number increased， the specific energy absorption， stroke efficiency， and specific total efficiency of the tubes decreased significantly； while they showed an increasing trend as the impact energy increased. |
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