| Avitzur上限模式在楔形模平面应变正挤压中的运用 |
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| 引用本文： | 南建平. Avitzur上限模式在楔形模平面应变正挤压中的运用[J]. 长沙理工大学学报(自然科学版), 2005, 2(4): 39-43 |
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| 作者姓名： | 南建平 |
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| 作者单位： | 鄂州大学,建筑与机械工程学院,湖北,鄂州,436000 |
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| 摘 要： | 假定楔形模正挤压的速度场为动可容连续速度场，运用虚功原理和变分原理，将上限模式用于楔形模平面应变正挤压中，分别计算出塑变功率、剪切功率、摩擦功率和平均单位应力，最后推导出模具最佳半楔角公式．
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| 关 键 词： | 上限模式 平面应变 功率 |
| 文章编号： | 1672-9331（2005）04-0039-05 |
| 收稿时间： | 2005-06-17 |
| 修稿时间： | 2005-06-17 |
Avitzur Upper Bound Model in Plain Strain Forward Extrusion of the Cuneiform Mould |
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| NAN Jian-ping. Avitzur Upper Bound Model in Plain Strain Forward Extrusion of the Cuneiform Mould[J]. Journal of Changsha University of Science and Technology(Natural Science), 2005, 2(4): 39-43 |
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| Authors: | NAN Jian-ping |
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| Affiliation: | The College of Civil and Mechanical Engineering, Ezhou University, Ezhou 436000, China |
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| Abstract: | It is assumed that the velocity field of cuneiform forward extrusion be motive,permissible and continuous.Using the principles of virtual work and variation,the upper bound model is applied to the analysis of the cuneiform mould plane strain forward extrusion.The plastic deformation power,the shearing power,the friction power,and the average unit pressure have been calculated respectively.And finally,the formula of the optimal half wedge angle is deduced. |
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| Keywords: | upper bound model plane strain power |
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