| 预报正交切削剪切角的修正拉格郎日有限元法 |
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| 引用本文： | 张慧丽,贺斌,等.预报正交切削剪切角的修正拉格郎日有限元法[J].佳木斯大学学报,2001,19(2):109-112. |
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| 作者姓名： | 张慧丽 贺斌 |
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| 作者单位： | 佳木斯大学机械工程学院!黑龙江佳木斯154007 |
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| 基金项目： | 黑龙江省自然科学基金项目 A980 9 |
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| 摘 要： | 剪切角是金属切削中一个重要的物理量。本文从传统的弹性理论和塑性理论出发，由变分原理导出了材料符合Prandtl-Reuss流动规律和von Mises屈服判据的修正拉格郎日有限元刚度矩阵方程式，并从相应的等效流动应力场中直接获取剪切角，实验结果表明，理论分析与实验值相吻合。
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| 关 键 词： | 剪切角 刚度矩阵 剪切滑移 变形 切削 有限元法 |
| 文章编号： | 1008-1402(2001)02-0109-04 |
| 修稿时间： | 2001年4月1日 |
A MODIFIED FEM FOR SHEARING ANGLE PREDICTION IN ORTHOGONAL CUTTING PROCESS |
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| ZHANG Hui-li,HE Bin,YANG Chuan-hua,GU Li-zhi.A MODIFIED FEM FOR SHEARING ANGLE PREDICTION IN ORTHOGONAL CUTTING PROCESS[J].Journal of Jiamusi University(Natural Science Edition),2001,19(2):109-112. |
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| Authors: | ZHANG Hui-li HE Bin YANG Chuan-hua GU Li-zhi |
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| Abstract: | Shearing angle is an important physical quantity in metal machining. According to the elastic and plastic theories, a modified Lagrange finite element matrix equation, which is in conformity to Prandtl-Reuss flowing Law of material and Von Mises yield criterion, is derived out for stiffness calculation. With the matrix equation, the shearing angle can be obtained directly form the equivalent stress field. It is found that experimental results fit well with calculated results. |
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| Keywords: | shearing angle stiffness matrix shearing slippage deformation element |
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