| 基于ANSYS的木薯茎秆静力学仿真研究 |
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| 引用本文： | 薛忠,张衍林,张劲,陈实.基于ANSYS的木薯茎秆静力学仿真研究[J].农机化研究,2016(6):116-121. |
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| 作者姓名： | 薛忠 张衍林 张劲 陈实 |
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| 作者单位： | 1. 华中农业大学工学院,武汉 430070;中国热带农业科学院农业机械研究所,广东湛江 524091;2. 华中农业大学工学院,武汉,430070;3. 中国热带农业科学院农业机械研究所,广东湛江,524091 |
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| 基金项目： | 广东省自然科学基金-粤东西北创新人才联合培养项目(2014A030307034);公益性行业(农业)科研专项(201203072);海南省自然科学基金项目(513149) |
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| 摘 要： | 以木薯茎秆力学试验为基础,应用计算机仿真手段模拟分析了木薯茎秆在失效极限状态下的力学状况。使用万能试验机对木薯茎秆的主要力学成分(木质部、韧皮纤维)进行拉压试验,分别测定了木质部和韧皮纤维的多组弹性模量数据。研究表明:1韧皮纤维处的XY方向切应力在-0.002 195~-0.000 231Pa范围内,木质部处XY方向切应力在-0.000 231~0.000 014Pa范围内,XY方向最大切应力位于木质部与韧皮纤维交接处为-0.002 195Pa,XY方向最小切应力位于木质部为0.000 14Pa;YZ方向与XZ方向切应力呈现对称性,茎秆在YZ、XZ方向的切应力主要集中在-3.07E-10~-4.58E-11Pa范围内,YZ或XZ方向最大切应力-2.42E-9Pa,YZ或XZ方向最小切应力4.59E-11Pa。2模型横向受压时的XY、YZ、XZ方向切应力值分布呈现各自不同的规律,但都对称分布;XY方向切应力最大值为±1.746 49Pa,最小值为±0.194 054Pa;YZ方向切应力最大值为±0.4562Pa,最小值为±0.005 063Pa;XZ方向切应力最大值为±0.260 701Pa,最小值为±0.028 967Pa。
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| 关 键 词： | 木薯茎秆 ANSYS 有限元 仿真 |
Compressive Test and Simulation of Cassava Stems Based on ANSYS |
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| Xue Zhong;Zhang Yanlin;Zhang Jin;Chen Shi.Compressive Test and Simulation of Cassava Stems Based on ANSYS[J].Journal of Agricultural Mechanization Research,2016(6):116-121. |
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| Authors: | Xue Zhong;Zhang Yanlin;Zhang Jin;Chen Shi |
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| Institution: | Xue Zhong;Zhang Yanlin;Zhang Jin;Chen Shi;College of Engineering and Technology,Huazhong Agricultural University;Institute of Agricultural Machinery,Chinese Academy of Tropical Agricultural Sciences; |
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| Abstract: | In this paper , on the basis of cassava stalk mechanical test , application of computer simulation to simulate and analyze the mechanics of cassava stalk in the failure limit state .During the dissertation , analysed composite structure of cassava stalk , gave the relationship of various types of material between the flexible matrix and the engineering constants ,and assumed material types of cassava stalk .Result show:( 1 ) The shear stress of the XY direction on phloem fiber is in the range of -0.002 195~-0.000 231Pa,the shear stress of the XY direction on xylem is in the range of -0.000 231~0.000 014Pa, the maximum shear stress of the XY direction is at the junction of the xylem and phloem fiber which value is -0.002 195Pa, the minimum shear stress of the XY direction is on the xylem which value is 0.000 14Pa;shear stress of YZ direction and XZ direction has the symmetry , the shear stress of stalk at direction of YZ and XZ are concentrated on -3.07E-10~-4.58E-11Pa,the maximum shear stress of YZ or XZ direction is -2.42E-9Pa,the minimum shear stress of YZ or XZ direction is 4.59E-11Pa.(2) The shear stress of XY、YZ、XZ direction present their different laws when pressure model on the lateral , but they all distribute symmetrically .The maximum shear stress of the XY direction is ±1.746 49Pa,the minimum shear stress is ±0.194 054Pa;the maximum shear stress of the YZ direction is ±0.456 2Pa, the minimum shear stress is ±0.005 063Pa, the maximum shear stress of the XZ direction is ±0.260 701Pa, the minimum shear stress is ±0.028 967Pa. |
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| Keywords: | cassava stalk ANSYS finite element simulation |
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