Static Pressure Mechanical Properties and Simulation of Huangguan Pears

WU Ying-tong, WU Zi-ming, ZHANG Li-jun, SUN Yi-ming, WANG Li-jun, SONG Hai-yan

Packaging Engineering ›› 2023 ›› Issue (19) : 50-57.

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Packaging Engineering ›› 2023 ›› Issue (19) : 50-57. DOI: 10.19554/j.cnki.1001-3563.2023.19.007

Static Pressure Mechanical Properties and Simulation of Huangguan Pears

  • WU Ying-tong1, WU Zi-ming1, ZHANG Li-jun1, SUN Yi-ming1, WANG Li-jun2, SONG Hai-yan2
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Abstract

The work aims to establish a relationship model between physiological characteristics and mechanical damage of Huangguan pears to simulate the static pressure process of the fruit. The mechanical properties of fruit materials were studied by material relaxation test and static compression test. The three-dimensional scanning method was used to assist in the establishment of the finite element model of the fruit, and the static load damage process of the fruit was simulated. The Maxwell viscoelastic constitutive model was used to successfully simulate the rheological properties of the fruit. By comparing the static pressure test with the traditional elastic-plastic material model, the error was reduced by 7%, which verified the simulation accuracy. According to the results of von Mises equivalent stress distribution, it was found that the pear would be significantly damaged under static load of 161.21 N. In the above studies, two materials are used to simulate the static compression test, which further verifies the reliability of the numerical simulation method to simulate the static process of the fruit. It also provides a theoretical basis for the mechanized picking, storage, packaging and processing of Huangguan pears.

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WU Ying-tong, WU Zi-ming, ZHANG Li-jun, SUN Yi-ming, WANG Li-jun, SONG Hai-yan. Static Pressure Mechanical Properties and Simulation of Huangguan Pears[J]. Packaging Engineering. 2023(19): 50-57 https://doi.org/10.19554/j.cnki.1001-3563.2023.19.007
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