万志华,张永林,宋少云,曹梅丽.中花6号花生仁压缩力学性能及仿真分析[J].包装工程,2020,41(23):44-50.
WAN Zhi-hua,ZHANG Yong-lin,SONG Shao-yun,CAO Mei-li.Compression Mechanical Properties and Simulation Analysis of Zhonghua-6 Peanut Kernel[J].Packaging Engineering,2020,41(23):44-50. |
| 中花6号花生仁压缩力学性能及仿真分析 |
| Compression Mechanical Properties and Simulation Analysis of Zhonghua-6 Peanut Kernel |
| 投稿时间：2020-05-06 |
| DOI：10.19554/j.cnki.1001-3563.2020.23.007 |
| 中文关键词: 压缩试验 花生仁 仿真 成熟度 |
| 英文关键词: compression test peanut kernel simulation maturity |
| 基金项目:粮食公益性行业科研专项经费资助项目(201313012) |
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| 中文摘要: |
| 目的 研究3种成熟度花生仁在3种压缩方向下的力学性能。方法 以中花6号花生仁为研究对象，通过正压、侧压和立压等3种方向，对3种不同成熟度样品进行压缩试验，获得力学特性曲线，计算其弹性模量和抗压强度等力学参数;通过方差分析得出成熟度、压缩方向与各力学参数之间的关系;通过三维建模和有限元分析，比较试验值与模拟值之间的误差，验证花生仁压缩试验及有限元分析的可靠性及准确性。结果 在3种压缩方式下，测得3种不同成熟度的花生仁弹性模量为15.33~45.66 MPa，破裂力为45.5~153.4 N，弹性变形量为0.72~2.22 mm，抗压强度为16.25~47.94 MPa。成熟度对花生仁抗压强度和破裂力的影响极显著(P<0.01)，对花生仁弹性模量和弹性形变的影响显著(0.01<P<0.05);压缩方向对花生仁弹性模量和弹性形变的影响显著(0.01<P<0.05)，对花生仁抗压强度和破裂力的影响不显著(P>0.05)。结论 相同成熟度的花生仁，在立压方向下最容易发生破裂;花生仁属于各向异性材料，种脐部位为花生仁受力最薄弱的位置。 |
| 英文摘要: |
| The work aims to study the mechanical properties of peanut kernels with different maturity under three compression directions. With Zhonghua-6 peanut kernel as the subject, the mechanical characteristic curves of three different maturity samples were obtained by compression tests in three directions of positive pressure, lateral pressure and vertical pressure. The mechanical parameters such as modulus of elasticity and compressive strength were calculated. The relationship among maturity, compression direction and mechanical parameters was obtained by variance analysis. The error between the test value and the simulation value was compared to verify the reliability and accuracy of peanut kernel compression test and finite element analysis through three-dimensional modeling and finite element analysis. The elastic modulus of peanut kernel was 15.33-45.66 MPa, the breaking force was 45.5-153.4 N, the elastic deformation was 0.72-2.22 mm, and the compressive strength was 16.25-47.94 MPa. The results showed that maturity had extremely significant on the compressive strength and breaking force of peanut kernel (P<0.01). Maturity had significant on the elastic modulus and deformation of peanut kernel (0.01<P<0.05). The compression direction had a significant effect on the elastic modulus and deformation of peanut kernel (0.01<P<0.05), but had no significant effect on the compressive strength and breaking force of peanut kernel (P>0.05). The results show that the peanut kernel with the same maturity is the most likely to crack under vertical pressure. The belonged to anisotropic material. The hilum of peanut kernel is the weakest position. |
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