Finite Element Modeling to Predict the Effect of Nose Radius on the Equivalent Strain (PEEQ) for Titanium Alloy (Ti-6Al-4V)

Authors: Moaz H. Ali, M. N. M. Ansari, Pang Jing Shen

Abstract:

In present work, prediction the effect of nose radius, rz (mm) on the equivalent strain (PEEQ) and surface finish during the machining of titanium alloy (Ti-6Al-4V) through orthogonal cutting process. The results were performed at several of the nose radiuses, rz (mm) while the cutting speed, vc (m/min), feed rate, f (mm/tooth) and depth of cut, d (mm) were remained constant. The equivalent plastic strain (PEEQ) was estimated by using finite element modeling (FEM) and applied through ABAQUS/EXPLICIT software. The simulation results led to conclude that the equivalent plastic strain (PEEQ) was increased and surface roughness (Ra) decreased when increasing nose radius, rz (mm) during the machining of titanium alloy (Ti–6Al–4V) in dry cutting conditions.

Keywords: Finite element modeling (FEM), nose radius, plastic strain (PEEQ), titanium alloy (Ti-6Al-4V).

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1073469

References:

[1] Xiaoping Yang and C. Richard Liu, Machining titanium and its alloys. Machining Science and Technology, 1999; 3(1), pp. 107-139.
[2] S. K. Bhaumik, C. Divakar, and A. K. Singh, Machining Ti-6AI-4V Alloy with a wBN-cBN Composite Tool. Materials & Design, 1995; 16(4), pp. 221-226.
[3] A. R. Machado and J. Wallbank, Machining of Titanium and Its Alloys: A Review. Journal of Engineering Manufacture, 1990; 204, pp. 53-60.
[4] H. E. Trucks, Machining Titanium Alloys. Machine and Tool Blue Book, 1987; 82(I), pp. 39-41.
[5] J. F. Kahles, M. Field, D. Eylon, and F. H. Froes, Machining of Titanium Alloys. Journal of Metals, 1985, pp. 27-35.
[6] A. R. Shahan and A. K. Taheri, Adiabatic Shear Bands in Titanium and Titanium Alloys: a critical review. Materials & Design, 1993; 14 (4), pp. 243-250.
[7] A. E. Bayoumi and J. Q. Xie, Some Metallurgical Aspects of Chip Formation in Cutting Ti-6Al-4V Alloy. Materials Science and Engineering, 1995; A190, pp. 173-178.
[8] R. Komanduri, T. A. Schroeder, D. K. Bandhopadhyay, and J. Hazra, Titanium: A Model Material for Analysis of the High-Speed Machining Process. Editors: D. F. Hasson and C. H. Hamilton, Advanced Processing Methods for Titanium, The Metallurgical Society of AIME, 1982.
[9] Donald R. Lesuer, "Experimental investigations of material for Ti-6Al-4V titanium and 2024-T3 aluminum”. U.S. Department of Transportation Federal Aviation Administration Final Report Office of Aviation Research: Washington, DC 20591.
[10] M.S. ElTobgy, E. Ng, M.A. Elbestawi, Finite element modeling of erosive wear. International Journal of Machine Tools & Manufacture, 2005; 45, pp. 1337–1346.
[11] T. Ozel, Y. Karpat, Identification of constitutive material model parameters for high strain rate metal cutting conditions using evolutionary computational algorithms. Mater. Manuf. Process, 2007; 22(5-6), pp. 659-667.