Finite Element Investigation on Cutting Force and Residual Stress in 3D Elliptical Vibration Cutting Ti6Al4V

被引:9
|
作者
Li, Shiyu [1 ]
Han, Jinguo [1 ,2 ]
Yu, Haiqiang [1 ]
Wang, Jinhui [1 ]
Lu, Mingming [3 ]
Tian, Yebing [1 ]
Lin, Jieqiong [3 ]
机构
[1] Shandong Univ Technol, Sch Mech Engn, Zibo 255049, Peoples R China
[2] Shandong Univ Technol, Shandong Prov Key Lab Precis Mfg & Nontradit Mach, Zibo 255049, Peoples R China
[3] Changchun Univ Technol, Sch Mechatron Engn, Changchun 130012, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Ti-6Al-4V alloy; 3D EVC; cutting force; residual stress; finite element method; MACHINABILITY; OPTIMIZATION; PARAMETERS; MECHANISMS; CARBIDE; WEAR;
D O I
10.3390/mi13081278
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Titanium alloy is a typical difficult-to-machine material with features of superhigh strength and hardness, and low elastic modulus. It is difficult to guarantee the processing quality and efficiency due to the high cutting force and tool wear in conventional cutting. Elliptical vibration cutting (EVC) as an effective method can improve the machinability of titanium alloys. In this paper, the finite element method (FEM) was adopted to study the cutting force and residual stress of 3D EVC in machining of Ti6Al4V. The Johnson-Cook constitutive model was utilized to illustrate the plastic behavior of Ti6Al4V alloy. The kinematics of the 3D EVC was described, and then the influence of various cutting speeds, vibration amplitudes, vibration frequencies and depths of cut on cutting force and residual stress were carried out and analyzed. The simulation results show that the cutting speed, vibration amplitude a, vibration frequency and depth of cut have larger effect on principal force. In addition, the compressive stress layer can be easily obtained near the machined surface by using 3D EVC, which is helpful to improve the working performance of workpiece.
引用
收藏
页数:20
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