无机材料学报

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新型陶瓷刀具材料的热应力分析

王永国; 艾兴; 李兆前; 邓建新; 赵军   

  1. 山东大学机械工程学院 济南 250061
  • 收稿日期:2000-08-17 修回日期:2000-09-26 出版日期:2001-09-20 网络出版日期:2001-09-20

Thermal Stress Analysis of Newly Functionally Graded Ceramic Cutting Tools

WANG Yong-Guo; AI Xing; LI Zhao-Qian; DENG Jian-Xin; ZHAO Jun   

  1. Department of Mechanical Engineering; Shandong University; Jinan 250061 China
  • Received:2000-08-17 Revised:2000-09-26 Published:2001-09-20 Online:2001-09-20

摘要: 运用有限元方法计算了梯度功能陶瓷刀具FG-2内的热应力,计算结果表明,在高速切削条件下,梯度功能陶瓷刀具内的热应力明显小于普通陶瓷刀具;同时进行的切削实验也表明在高速切削的条件下,FG-2的破损寿命明显好于SG-4.说明梯度功能陶瓷刀具适应于高速切削.

关键词: 梯度功能, 陶瓷刀具, 有限元, 热应力

Abstract: The thermal stresses in a functionally graded ceramic tool were calculated by using the finite element method. Results show that the thermal stresses in the functionally graded ceramic tool are smaller than in the common ceramic tools in high cutting speed conditions, which was confirmed by the cutting experiment. This phenomenon indicates that functionally graded ceramic tools are more suitable for high- speed cutting than conventional cutting tools.

Key words: functionally graded ceramic tool, finite element method, thermal stress

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