| 金属振动切削的数值模拟研究 |
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| 引用本文： | 陈相宇,双飞,马维.金属振动切削的数值模拟研究[J].北京理工大学学报,2016,36(S1):199-203. |
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| 作者姓名： | 陈相宇 双飞 马维 |
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| 作者单位： | 中国科学院力学研究所, 北京 100190,中国科学院力学研究所, 北京 100190,中国科学院力学研究所, 北京 100190 |
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| 基金项目： | 国家自然科学基金重点资助项目（11132011）；面上资助项目（11572337，51575029） |
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| 摘 要： | 针对材料高速切削过程提出基于耦合欧拉-拉格朗日表述的有限元模型.该模型在消除网格畸变、无需网格再划分和应用分离准则的条件下，由材料塑性流动控制切削过程中切屑材料的分离行为，突破了拉格朗日方法中预设切屑材料沿直线轨迹分离的局限性.研究表明，该模型可用于材料振动切削过程的数值模拟研究.本文主要针对该过程中切削力、加工表面完整性、切屑形貌及其转变等行为进行模拟研究.
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| 关 键 词： | 振动 切削过程 数值模拟 塑性流动 分离准则 |
| 收稿时间： | 2016/3/26 0:00:00 |
Numerical Simulation of Metal Vibration Cutting |
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| CHEN Xiang-yu,SHUANG Fei and MA Wei.Numerical Simulation of Metal Vibration Cutting[J].Journal of Beijing Institute of Technology(Natural Science Edition),2016,36(S1):199-203. |
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| Authors: | CHEN Xiang-yu SHUANG Fei and MA Wei |
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| Institution: | Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China,Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China and Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | A numerical model was put forward based on the coupled Eulerian-Lagrangian formulation. The model eliminates the influence of mesh distortion and the limitation of separation line method in Lagrangian approach. The chip separation from the workpiece machining surface was assumed to be caused by the plastic flow of material. As a result, this model is capable of simulating the vibration cutting process effectively. Under different cutting conditions, calculations of vibration cutting process was performed of Ti6Al4V alloy were performed. Effects of tool vibration was investigated on the cutting force, the machining surface integrity of workpiece, the chip morphology and the behavior of the transition from continuous chip to serrated chip were investigated. |
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| Keywords: | vibration cutting process numerical simulation plastic flow separation criterion |
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