| 基于NASTRAN的玉米播种机机架振动有限元模态分析 |
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| 引用本文： | 徐良,王艳晓. 基于NASTRAN的玉米播种机机架振动有限元模态分析[J]. 农业工程, 2012, 2(5): 59-62 |
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| 作者姓名： | 徐良 王艳晓 |
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| 作者单位： | 1.贵州省山地农业机械研究所，贵阳550007 |
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| 基金项目： | 贵州省农业科技攻关项目“山地小型玉米机械化播种技术研究及应用”(项目编号:黔科合NY字[2011]3013) |
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| 摘 要： | 为了解决玉米播种机机架在播种过程中产生复杂振动变形而影响播种株距均匀性的问题，以自主研发的2BFQ 2型山地小型玉米播种机为研究对象，用UGNX75软件建立机架的三维模型和有限元模型，然后应用NASTRAN求解器分析机架的各阶模态，最后计算出机架的固有频率、总振幅和主振型，并输出各阶频率位移云图。该研究结果为机架后续的设计和减振分析提供了理论依据，对稳态播种和提高播种株距的均匀性具有重要的理论意义。
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| 关 键 词： | 机架 有限元模态分析 振动 NASTRAN |
Finite Element Modal Analysis of Vibration for Mountain Miniature Corn Planter Frame Based on NASTRAN |
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| Xu Liang and Wang Yanxiao. Finite Element Modal Analysis of Vibration for Mountain Miniature Corn Planter Frame Based on NASTRAN[J]. Agricultural Engineering, 2012, 2(5): 59-62 |
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| Authors: | Xu Liang and Wang Yanxiao |
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| Affiliation: | 1.Guizhou Province Agricultural Machinery Research Institute,Guiyang 550007,China; 2.College of Mechanical Engineering,Guizhou University,Guiyang 550003,China) |
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| Abstract: | Frame of mountain miniature corn planter has complex vibration deformation issues while sowing,and this issue should seriously decrease uniformity of plant spacing.Taking the 2BFQ-2 type mountain miniature corn planter,independently developed by our institution,as the research object,3D model and finite element model of the frame was built based on UGNX7.5,and modals of frame were analyzed by using NASTRAN solver.Finally,natural frequency,total amplitude and main vibration mode were calculated,and then output cloud picture of displacement of each natural frequency.Results provide theoretical basis for frame subsequent designation and vibration reduction,and it is important to enhancing the uniformity of plant spacing and the sowing stability. |
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| Keywords: | Frame Finite element modal analysis Vibration NASTRAN |
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