| 朱占江1，渠述贺1，2，毛吾兰1，杨莉玲1，买合木江·巴吐尔1，沈晓贺1.挤压载荷下核桃力学特性及其仁种皮损伤研究[J].中国油脂,2025,50(12):.[ZHU Zhanjiang1, QU Shuhe1,2, MAO Wulan1, YANG Liling1,
MAIHEMUJIANG·Batuer1, SHEN Xiaohe1.Mechanical properties of walnut and damage of its kernel pellicle under compression load[J].China Oils and Fats,2025,50(12):.] |
| 挤压载荷下核桃力学特性及其仁种皮损伤研究 |
| Mechanical properties of walnut and damage of its kernel pellicle under compression load |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240502 |
| 中文关键词: 核桃 核桃仁 挤压 力学特性 种皮损伤 |
| 英文关键词:walnut walnut kernel compression mechanical property kernel pellicle damage |
| 基金项目:新疆维吾尔自治区自然科学基金杰出青年科学基金项目（2022E01E61）;新疆维吾尔自治区中央引导地方项目（ZYYD2024CG21）；国家自然科学基金（52465034） |
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| Author Name | Affiliation | | ZHU Zhanjiang1, QU Shuhe1,2, MAO Wulan1, YANG Liling1,
MAIHEMUJIANG·Batuer1, SHEN Xiaohe1 | 1.Institute of Agricultural Equipment, Xinjiang Academy of Agricultural Sciences, Urumqi 830091,China
2.College of Energy and Control Engineering,Changji University, Changji 831100, Xingjiang, China |
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| 中文摘要: |
| 旨在为降低机械破壳时核桃仁的种皮损伤提供参考，以不同加载方向和加载速度对原果核桃和核桃半仁进行单轴挤压试验，探究其在不同加载条件下核桃的受力情况及其仁种皮损伤情况。结果表明，加载方向对原果核桃和核桃半仁的挤压载荷峰值和种皮损伤面积的影响更显著，其中：沿核桃原果纵径方向挤压时所需载荷峰值明显大于棱径方向和横径方向的，沿核桃半仁厚度方向挤压时所需载荷峰值明显大于长度方向和宽度方向的；沿原果核桃横径方向挤压时的种皮损伤程度显著小于沿纵径方向和棱径方向的，沿核桃半仁厚度前部挤压时的种皮损伤面积最小。综上，在实际生产过程中，应尽量沿横径方向对原果核桃进行施力破壳，进而降低核桃仁的种皮损伤。 |
| 英文摘要: |
| In order to provide a reference for reducing the damage of walnut kernel pellicle during mechanical shelling, uniaxial compression tests were conducted on whole walnuts (in-shell) and walnut half-kernels under different loading directions and speeds to investigate their force-bearing behaviors and kernel pellicle damage under various loading conditions. The results showed that the loading direction significantly influenced the peak compression load and kernel pellicle damage area for both whole walnuts and walnut half-kernels. Specifically, for whole walnuts, the peak load required when compressed along the longitudinal diameter direction was markedly higher than that along the rib diameter or transverse diameter directions. For walnut half-kernels, the peak load under compression along the thickness direction was significantly greater than that along the length or width directions. Compression along the transverse diameter direction of whole walnuts caused substantially less kernel pellicle damage compared to the longitudinal and rib diameter directions.The smallest kernel pellicle damage area occurred when compressing the front region of the half-kernels along its thickness direction. In conclusion, during actual production, force should be applied to whole walnuts along the transverse diameter direction as much as possible to minimize kernel pellicle damage. |
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