标题：Fatigue failure analysis of ceramic tools in intermittent cutting harden steel based on experiments and finite element method
作者：Ni, Xiuying; Zhao, Jun; Gong, Feng; Li, Gang
作者机构：[Ni, Xiuying; Gong, Feng; Li, Gang] Ludong Univ, Sch Transportat, Yantai 264025, Shandong, Peoples R China.; [Zhao, Jun] Shandong Univ, Sch Mech Eng 更多
通讯作者：Ni, XY;Zhao, J
通讯作者地址：[Ni, XY]Ludong Univ, Sch Transportat, Yantai 264025, Shandong, Peoples R China;[Zhao, J]Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean 更多
来源：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
关键词：Ceramic tool; failure mechanism; fatigue crack; finite element analysis;; tool life
摘要：The major concern of this article is the fatigue failure mechanisms of ceramic cutting tools with the help of intermittent turning experiment and simulation. Finite element simulation was adopted to analyze the spatial and temporal distribution of the stress on the cutting tools. The crack initiation and expansion life in the different positions was researched based on the fatigue crack model. The experiment results showed that the fracture area of flank face reduced with the increase in feed rates, while the fracture area and damage depth of rake face both increased. Through the simulation of fatigue crack, it could be inferred that fatigue fractures were caused by coalescence of cracks. When the feed rate was greater than or equal to 0.2 mm, tool failure was mainly manifested as fatigue fracture of the rake face. And the results of fatigue crack propagation simulation well predicted the cutting tool life. A novel research method for tool fatigue failure was provided.