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为探究库尔勒香梨在冲击载荷下的损伤特性，本研究通过观察分析香梨受损后的宏观表面与微观结构，探讨不同冲击速度、曲率半径及硬度对香梨损伤的影响，并利用多元线性回归构建香梨损伤面积与这些变量之间的数学模型。研究发现，香梨在受到冲击后，其外观与内部结构均会出现显著改变，影响其耐损性，并且在低速冲击条件下，损伤面积随曲率半径增加而减少；而在高速冲击条件下，则呈相反趋势。此外，香梨开始出现损伤的临界冲击速度为2.42 m/s,而造成破裂的临界冲击速度为5.05 m/s。研究表明，损伤面积与冲击速度成正比，与果实硬度成反比。所建立的数学模型(S=492.99V+28.27R+203.48Y-4 456.15)能够有效地描述冲击速度、硬度和曲率半径与损伤面积之间的关系。该研究成果可为香梨采摘及采后处理设备的设计优化提供理论依据。
Abstract：In order to explore the damage characteristics of Korla fragrant pear under impact loading, the macroscopic surface and microscopic structure of the damaged pear were observed and analyzed in this study, and the effects of different impact velocities, radii of curvature and hardness on pear damage were discussed. The mathematical model between the damage area of the fragrant pear and these variables was constructed using multiple linear regression. It was found that the appearance and internal structure of pear changed significantly after being impacted, which affected their damage resistance. Under the condition of low velocity impact, the damage area decreased with the increase of curvature radius. However, under the condition of high speed impact, the trend was opposite. In addition, the minimum impact velocity of fragrant pear was 2.42 m/s, and the minimum impact velocity causing rupture was 5.05 m/s. The study showed that the damage area was directly proportional to the impact velocity and inversely proportional to the fruit hardness. The established mathematical model(S=492.99V+28.27R+203.48Y-4 456.15) can effectively describe the relationship between the impact velocity, hardness, radius of curvature and damage area. The research results can provide a theoretical basis for the design and optimization of equipment for picking and post-harvest processing of fragrant pears.
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基本信息:
中图分类号:S225.93
引用信息:
[1]夏一帆,李世元,张红,等.香梨果实冲击损伤特性研究[J].塔里木大学学报,2025,37(05):38-45.
基金信息:
塔里木大学校长基金硕士人才项目(TDZKSS202427);塔里木大学校长基金创新团队项目(TDZKCX202203); 新疆生产建设兵团指导性科技计划项目(2022ZD094)