| 螺旋刀具土壤切削过程模拟分析——基于ANSYS/LS-DYNA971 |
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| 引用本文： | 薛子萱,吕新民,唐卫卫.螺旋刀具土壤切削过程模拟分析——基于ANSYS/LS-DYNA971[J].农机化研究,2011,33(4). |
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| 作者姓名： | 薛子萱 吕新民 唐卫卫 |
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| 作者单位： | 西北农林科技大学机械与电子工程学院,陕西杨凌,712100 |
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| 摘 要： | 根据立式螺旋开沟机的工作特点,在ANSYs中建立了螺旋刀具切削土壤的有限元模型,并运用显式动力分析程序LS-DYNA97l对螺旋刀具土壤过程进行了数值模拟分析,分析结果与实际工作情况吻合,得到了切削过程中土壤的等效应力分布情况.结果表明,土壤在切削时,主要受到刀具挤压和剪切破坏.当切削力升高到土壤破坏强度时,土壤迅速失效,为揭示土壤切削状态和开沟机优化设计提供了依据.
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| 关 键 词： | 显式动力分析 螺旋刀具 土壤 有限元模型 |
The Simulation of Soil Cutting with Screw Cutter Based on ANSYS/LS-DYNA971 |
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| Xue Zixuan,Lv Xinmin,Tang Weiwei.The Simulation of Soil Cutting with Screw Cutter Based on ANSYS/LS-DYNA971[J].Journal of Agricultural Mechanization Research,2011,33(4). |
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| Authors: | Xue Zixuan Lv Xinmin Tang Weiwei |
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| Institution: | Xue Zixuan,Lv Xinmin,Tang Weiwei(College of Mechanism and Electronic Engineering,Northwest A & F University,Yangling 712100,China) |
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| Abstract: | According to the working characteristics of upright screw ditcher,the finite element model of soil cutting with screw cutter is built in ANSYS.The process of soil cutting of screw cutter is simulated in the explicit dynamic analysis program LS-DYNA971.The results coincide with realities and show the rules of von Mises Stress in soil model.The results also indicate that soil is mainly received extrusion break and shear failure when soil is cutted,and soil will be wrecked as soon as the break force reaches th... |
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| Keywords: | explicit dynamic analysis screw cutter soil finite element model |
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