Effects of heat fraction on chip formation based on hard turning thermo-mechanical model

被引：0

作者：

School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China ^{[1
]}

不详 ^{[2
]}

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来源：

Dongbei Daxue Xuebao | 2008年 / SUPPL. 2卷 / 13-16期

关键词：

Hard turning - Heat fraction - Machined materials - Serrated chip - Serrated chip formation - Softening phenomenon - Thermo-mechanical coupled - Thermomechanical model;

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摘要：

The thermo-mechanical coupled cutting model is made with Abaqus/Explicit software focused on the case of hard turning of 40CrNi2M. In order to stop heat dissipation affecting the model, for the machined workpiece, a zero conductivity value of the machined material is adopted. With the cutting model, a parametric study is proposed of the fraction of frictional work converted to heat at the tool/workpiece interface. This study proves that serrated chip formation is the result of a softening phenomenon, and the heat fraction influences the tool damage directly.

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