| 空心植物茎秆局部失稳的数值分析 |
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| 引用本文： | 胡婷,付志一.空心植物茎秆局部失稳的数值分析[J].农机化研究,2005(3):100-102. |
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| 作者姓名： | 胡婷 付志一 |
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| 作者单位： | 中国农业大学,理学院,北京,100083 |
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| 摘 要： | 着重讨论了空心植物茎秆弯曲时的Brazier效应及其对茎秆稳定性的影响。使用ANSYS软件建立植物茎秆的有限元模型,进行了多种稳定性分析,分析了茎秆弯曲时截面形状改变对抗弯刚度的影响,并讨论了惯性矩与曲率之间的关系,同时探讨了茎秆力学性质和节距对上述失稳形式的影响。
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| 关 键 词： | 农业工程 茎秆 数值分析 Brazier屈曲 ANSYS |
| 文章编号： | 1003-188X(2005)03-0100-03 |
| 修稿时间： | 2004年5月14日 |
Numerical Analysis on Local Buckling of Hollow Plant |
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| HU Ting,FU Zhi-yi.Numerical Analysis on Local Buckling of Hollow Plant[J].Journal of Agricultural Mechanization Research,2005(3):100-102. |
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| Authors: | HU Ting FU Zhi-yi |
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| Abstract: | In this paper, the author discussed the Brazier effect of hollow plant stems when they were bent, and the effect's infection to the stability of the stems. The finite element model of plant stems was established under ANSYS. Some stability analysises were taken on this model to research the cross-sectional shape changes of the stems. Also, the axial second moment is computed to discuss its relationship with the curvature. And finally, the mechanical characteristic and the length of the stem also affect that stability, they were also discussed in this paper. |
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| Keywords: | agricultural engineering plant stem numerical analysis Brazier buckling ANSYS |
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