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【目的】建立芦蒿Artemisia selengensis茎秆柔性体模型。【方法】根据芦蒿茎秆的物性参数,通过ANSYS有限元分析软件建立茎秆力学模型,对芦蒿茎秆在不同生长部位的轴向、径向压缩力学特性进行研究,分析比较模型计算值和试验测试值。【结果】模型计算值和试验测试值最大偏差为14.46%。芦蒿茎秆具有各向异性特征,其轴向压缩力学特性远大于径向;在3种不同位置段,径向压缩时,茎秆破碎出现在加载面的两端边缘位置,轴向压缩时,茎秆破碎出现在加载面,且应力由接近加载区域向周围逐渐减弱。【结论】可以运用模型仿真分析芦蒿茎秆力学特性,结果可为减少芦蒿在收获、运输、加工、储藏过程中的机械损伤和芦蒿收获机具的研制提供理论依据和参考。
【Objective】 To establish a soft body model of Artemisia selengensis. 【Method】 Based on the physical parameters of Artemisia selengensis, the mechanical model of stem was established by ANSYS software. The axial and radial compressive mechanical properties of Artemisia sacrorum stem at different growth sites were studied. The calculated values And test test values. 【Result】 The maximum deviation between calculated value and test value is 14.46%. Artemisia sacrorum stalks have the characteristics of anisotropy, the axial compressive mechanical properties are much larger than the radial; in three different position segments, radial compression, stems appear in the loading surface at both ends of the edge of the edge of the axial compression , The stalk breaks appear on the loading surface, and the stress gradually decreases toward the surrounding area near the loading area. 【Conclusion】 The mechanical properties of stems of Artemisia selengensis can be analyzed by model simulation. The results can provide theoretical basis and reference for the reduction of mechanical damage and the development of Artemisia selengensis harvester in the process of harvest, transportation, processing and storage.