Dynamic Response of Two-degree-of-freedom Continuous Impact Packaging for High Elasticity EPE Foam

CHEN Jiaxuan, ZHOU Weizhong, ZHANG Mei, LIN Zhiyang, LU Fude

Packaging Engineering ›› 2024 ›› Issue (19) : 318-324.

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Packaging Engineering ›› 2024 ›› Issue (19) : 318-324. DOI: 10.19554/j.cnki.1001-3563.2024.19.032

Dynamic Response of Two-degree-of-freedom Continuous Impact Packaging for High Elasticity EPE Foam

  • CHEN Jiaxuan1, LU Fude1, ZHOU Weizhong2, ZHANG Mei2, LIN Zhiyang2
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Abstract

Considering thatproducts often suffer from multiple drop impacts during packaging and transportation, the work aims to investigate the dynamic response of two-degree-of-freedom high elasticity EPE foam packaging under continuous impact loads. By taking EPE foam with a density of 34 kg/m3 as the research object, the intrinsic equations of high elasticity foam were firstly established, and the finite element model of a two-degree-of-freedom high elasticity foam packaging system was constructed by ABAQUS for finite element simulation. The Hyperform model and Mullins effect in ABAQUS were used to simulate the high elasticity foam and study the acceleration response of the product under continuous impact load. The comparative experimental and simulation results showed that the two-degree-of-freedom high elasticity EPE foam packaging system had a significant trend of product acceleration change in continuous impact, and the softening effect of the foam reduced its cushioning performance. In the two-degree-of-freedom packaging system, the impact on the bottom product lasts for a long time, and the impact effect causes the foam to soften. During the foam compaction phase, the stress rises sharply.

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CHEN Jiaxuan, ZHOU Weizhong, ZHANG Mei, LIN Zhiyang, LU Fude. Dynamic Response of Two-degree-of-freedom Continuous Impact Packaging for High Elasticity EPE Foam[J]. Packaging Engineering. 2024(19): 318-324 https://doi.org/10.19554/j.cnki.1001-3563.2024.19.032
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