| 刃前区应力场及刀具前角对其影响的数值分析 |
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| 引用本文： | 黄建龙,赵邦戟,郎福元,魏庆同. 刃前区应力场及刀具前角对其影响的数值分析[J]. 兰州理工大学学报, 1989, 0(3) |
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| 作者姓名： | 黄建龙 赵邦戟 郎福元 魏庆同 |
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| 作者单位： | 甘肃工业大学裂纹技术研究所(黄建龙,赵邦戟,郎福元),甘肃工业大学裂纹技术研究所(魏庆同) |
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| 摘 要： | 本文用有限元法得出正交切削前角γ分别为15°,0°和-15°时的刃前区弹性应力场的数值解。结果表明,在上述三种情况下,应力都分布在刃前区,而且主要为压应力;当γ为15°时的应力场比0°,-15°时远为集中;随着前角的增大,应力分布向“敏感应力状态”变化,这种状态有利于金属分离。
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| 关 键 词： | 弹性应力场 敏感应力状态 切削应力场 |
Numerical Analysis of Cutting Stress Field of Cutter and the in Fluence of the Rake Angle on Stress Field |
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| Huong Jianlong,Zhao Bangji,Lang Fuyuan,Wei Qingtong. Numerical Analysis of Cutting Stress Field of Cutter and the in Fluence of the Rake Angle on Stress Field[J]. Journal of Lanzhou University of Technology, 1989, 0(3) |
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| Authors: | Huong Jianlong Zhao Bangji Lang Fuyuan Wei Qingtong |
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| Affiliation: | Research Institute of Fracture Technology |
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| Abstract: | Numerical solutions of the elastic stress field of orthogonal cutting for rake angles Y being15, 0, and -15, respectively, are obtained by finite element analysis and presented in this paper. It is found that in above mentioned three cases, the stress distribution in the area ahead the cutting edge and the face in mainly composed of press stress. The stress field for Y being 15 is much more concentrated in the area than that for Y being 0 and-15. With the increase of the rake angle, the stress distribution has the tendency to change to the so called "sensitive stress state" , a state in favour of the metal separation. |
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| Keywords: | elastic stress field sensitive stress state cutting stress field |
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