Evaluation of in-plane compressive densification strain of honeycomb paperboard

Xin-Ni Mou,Li-Xin Lu,Yun-Ling Zhou

doi:10.1177/1687814020913424

Xin-Ni Mou, Li-Xin Lu + Show 1 more

Open Access

https://doi.org/10.1177/1687814020913424

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Abstract

The compressive densification strain of honeycomb paperboard is one of the important parameters which affect the energy absorption property of honeycomb paperboard. The in-plane bearing mechanism of honeycomb paperboard in plastic zone was analyzed based on compression tests of the single row and multi-rows of honeycomb paperboard. The result indicates that the core layer plays a supporting role in resisting the buckling of the face layer. The double inner folds are formed in machine direction and the symmetrical inner folds are formed in cross direction in a honeycomb core. The core single wall and the face layer play a critical role in the load bearing in machine direction, and the core double walls, core single wall, and face layer all play critical roles in the load bearing in cross direction. On this basis, the evaluation equation of the compressive densification strain was obtained based on the energy absorption efficiency method and geometric scale effect, which are verified so that the experiment and test results are in good agreement.

Highlights

The compressive densification strain of honeycomb paperboard is one of the important parameters which affect the energy absorption property of honeycomb paperboard
When bearing from M.D., the face layer buckles form an inner-concave wrinkling in the yield behavior of core single wall, and the face layer forms double inner folds as ‘‘W’’ in each honeycomb core correspondingly
The core single wall and the face layer play a critical role in bearing in M.D., and the curves of stress in plastic zone are stable

Summary

Introduction

The compressive densification strain of honeycomb paperboard is one of the important parameters which affect the energy absorption property of honeycomb paperboard. Xu and Li25 studied the in-plane bearing property of honeycomb paperboard with different face layers. This article studied the in-plane bearing mechanism of honeycomb paperboard based on geometric scale effect and carried out evaluation of in-plane densification strain.

Results

Conclusion