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| Numerical simulation for effect of friction coefficient under high-speed cutting by FEA |
| YAO Yong-Qi, GUO Yi-Mu, ZHU Ling, WANG Xiao-Fang |
| Institute of Solid Mechanics，Zhejiang University，Hangzhou 310027，China |
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Abstract The friction coefficient between the tool-chip plays an important role in high-speed cutting．The friction factor maybe very difficult to be ascertained because of the complexity of contact between tool and chip．In order to explore the influence of friction coefficient between tool and chip，the orthogonal metal cutting process under different friction coefficient is analyzed with the finite element method under plane strain conditions and the tool moves with a very high speed．The M[ises stress distribution．the distortion of nodes distortion on the surface of the machined workpiece are obtained with different friction coefficient using a general—purpose finite element computer code-ABAQUS／STANDARD．At last，the author educes some conclusions that the co-efficient between tool and chip has a very important effect for the metal cutting and high-speed cutting can improve the cutting efficiency and machine precision by foregoing analyse．
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Published: 28 February 2004
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高速切削时摩擦系数对切削影响的数值模拟
高速切削加工中，刀屑间的摩擦系数对切削产生重要影响．由于刀屑接触的复杂性，它们之间的摩擦系数很难确定．为了探究高速切削时，刀具与切屑间摩擦系数对切削的影响，采用有限元通用程序ABAQUS／STANDARD对不同摩擦系数下切削过程进行数值模拟．通过对Mises应力和加工表面节点垂直方向位移的比较，得出刀屑间的摩擦系数对剪切角有较大影响，摩擦系数增大，剪切角随之减小．高速切削既能够提高切削效率，又能提高加工精度．
关键词：
高速切削,
摩擦系数,
数值模拟,
有限元,
ABAQUS
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