Abstract
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.
Highlights
In the product packaging protection system, the cushioning energy absorption structure such as paper honeycomb, paper corrugation, plastic foam, and their combination structures are extensively utilized to fulfill the product protection and safe transportation [1,2,3,4,5]
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 Ydirection 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
This research work aims at the cushioning energy absorbing characteristics of the X-direction and Y-direction paper corrugation tubes with four kinds of regular polygon under the different conditions of axial drop impacts, and the main conclusions are as follows: (1) The X-direction paper corrugation tube exhibits relatively stable and controllable accordion deformation mode at small drop impact loading, and occurs the transverse shear deformation and corner tearing deformation for large drop impact loading or small tube length
Summary
In the product packaging protection system, the cushioning energy absorption structure such as paper honeycomb, paper corrugation, plastic foam, and their combination structures are extensively utilized to fulfill the product protection and safe transportation [1,2,3,4,5]. A few engineers and researchers have paid close attention to the potential advantage of the corrugation waveform easier bending and buckling deformations under axial compression, and proposed metal or composite corrugation tubular structures which can effectively improve the bearing capacity and energy absorption characteristics of thin-walled tubular structures [11, 12]. Hao et al [19] introduced a folded structure on the basis of square tube, the dynamic progressive buckling deformation mode and energy absorption of the folded tube with different geometric parameters under axial impact load were simulated and analyzed, and the results show that the folded tube can effectively improve the smoothness of crushing load, but the specific energy absorption is lower than the square tube. The purposes of this paper is to study the compression deformation mode and cushioning energy absorption of four kinds of regular polygon paper corrugated tubes under axial drop impacts, and to evaluate the influence rules of structural parameters (e.g. tube direction, tube cross-section shape, tube length) and loading parameters (e.g. impact block mass, impact energy) on the deformation characteristics and cushioning energy absorption of paper corrugation tubes, so as to provide a fundamental basis for the optimization design and engineering application of regular polygon paper corrugation tubes
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