| 金属正交切削工艺的有限元模拟 |
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| 引用本文： | 方刚,曾攀. 金属正交切削工艺的有限元模拟[J]. 机械科学与技术, 2003, 22(4): 641-645 |
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| 作者姓名： | 方刚 曾攀 |
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| 作者单位： | 清华大学机械工程系 北京100084(方刚)，清华大学机械工程系 北京100084(曾攀) |
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| 基金项目： | 国家自然科学基金项目 ( 50 1750 6 0 )资助 |
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| 摘 要： | 切削加工是一种重要的金属制造工艺 ,其中切屑成形是一种典型的大变形问题 ,它涉及到材料非线性、几何非线性以及边界非线性问题 ,在高速切削加工过程中 ,还会涉及到热力耦合问题。本文针对典型的正交切削工艺 ,建立了平面应变模型 ,工件采用了弹塑性材料模型 ,而刀具采用的是考虑温度变化的刚性材料模型。利用商业化软件DEFORM-2 D,对所建立的模型进行了有限元分析 ,得到了切屑成形、温度分布、切削力变化以及残余应力等结果。将部分结果与文献中介绍的实验结果做了比较 ,发现他们是吻合的
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| 关 键 词： | 正交切削 弹塑性变形 热力耦合 有限元 |
| 文章编号： | 1003-8728(2003)04-0641-05 |
| 修稿时间： | 2001-12-11 |
FEM Simulation of Orthogonal Metal Cutting Process |
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| FANG Gang,ZENG Pan. FEM Simulation of Orthogonal Metal Cutting Process[J]. Mechanical Science and Technology for Aerospace Engineering, 2003, 22(4): 641-645 |
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| Authors: | FANG Gang ZENG Pan |
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| Abstract: | Cutting is an important manufacturing process o f metal. The chip formation in metal cutting is one of the typical large deforma tion problems, which involves material nonlinearity, geometrical nonlinearity an d boundary nonlinearity, and thermal-mechanical coupling. In this paper, a plan e strain model is built to simulate orthogonal cutting, where workpiece is treat ed as elasto-plastic model, and the cutting tool is treated as rigid model. The above FEM model is analyzed by commercial software DEFORM-2D, and some results including the chip formation, temperature distribution, cutting force variable and residual stress were obtained. Simulation results are in agreement with prev ious experiment results. |
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| Keywords: | Orthogonal cutting Elaso-plasticity deformatio n Thermal-mechanical coupling FEM |
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