| 高温镍基合金锯齿状切削数值模拟 |
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| 引用本文： | 管小燕,吴爱胜,陈亚杰,吴华强.高温镍基合金锯齿状切削数值模拟[J].江苏科技大学学报(社会科学版),2014(2):145-149. |
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| 作者姓名： | 管小燕 吴爱胜 陈亚杰 吴华强 |
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| 作者单位： | 江苏科技大学机械与动力工程学院,江苏镇江212003 |
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| 基金项目： | 江苏省自然科学资金资助项目（BK2006082）;江苏省高校自然科学基金资助项目（04KJB460005） |
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| 摘 要： | 利用有限元建立了高温镍基合金切削模型，得出高温镍基合金锯齿状切屑的应变率、应变及温度分布，用绝热剪切理论探讨了锯齿状切屑的成形机理。同时模拟了切削参数对锯齿状切屑变形程度的影响，研究结果表明：齿距及锯齿化程度随着刀具前角的增大而减小，随着切削速度、背吃刀量的增大而增大，为优化切削参数、提高工件加工表面质量提供参考。
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| 关 键 词： | 锯齿状切屑 有限元 绝热剪切带 镍基合金 |
Study on saw-tooth chip of nickel-based alloy based on FEM Simulation |
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| Guan Xiaoyan,Wu Aisheng,Chen Yajie,Wu Huaqiang.Study on saw-tooth chip of nickel-based alloy based on FEM Simulation[J].Journal of Jiangsu University of Science and Technology:Natural Science Edition,2014(2):145-149. |
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| Authors: | Guan Xiaoyan Wu Aisheng Chen Yajie Wu Huaqiang |
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| Institution: | ( School of Mechanical and Dyoamical Engineering, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China) |
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| Abstract: | The cutting model of Nickel-based alloy is established by FEM simulation,the distribution of strain rate,strain and temperature in the cutting process are obtained and the formation mechanism of saw-tooth chip is discussed by using the adiabatic shear theory.The effect of cutting performance on the zigzag level of saw-tooth chip is also simulated.It is indicated that the zigzag level of saw-tooth chip weakens with increase of tool rake angle,but strengthens with increase of cutting speed and back cutting depth.The model can be used to optimize machining parameters and improve the manufacturing quality. |
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| Keywords: | serrated chip FEM adiabatic shear band Nickel-based alloy |
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