Simulations of Milling Process of Inconel 718 Alloy Based on Three Dimensional Finite Element Models

Abstract:

Nickel-based alloy is known as one of the most difficult–to-machine materials and the milling process is one of the most common metal removal operations. Modeling and simulation of milling process have the potential for understanding the milling mechanism, improving cutting tool designs and selecting optimum conditions, especially in advanced applications such as high-speed milling. This paper presents a 3D coupled thermo-mechanical finite element model based on ABAQUS\Explicit for the simulation of Inconel 718 chip formation in metal cutting. In the simulations, a Lagrangian formulation with an explicit solution scheme and a penalty contact algorithm has been used. The material behavior is modeled with classical Johnson-cook plasticity constitutive model and dynamic failure criteria for element removal, coupled with adaptive meshing and mass scaling technology for limiting the calculation time. The milling tool is modeled in UG software according to the real tool geometry, and meshed as a rigid tool. In order to verify the accuracy of 3D simulation, results (cutting forces and cutting temperature) were compared with the experimental results under the same cutting conditions as the simulations. The results obtained indicate that the simulation methodology is capable of predicting the cutting forces and cutting temperature. It suggests that 3D finite element simulation model of cutting processes can be truly trusted.

• Periodical: Advanced Materials Research (Volume 1017)
• Pages: 399-405
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1017.399
• Online since: September 2014
• Authors: Lin Jiang He*, Hong Hua Su, Jiu Hua Xu, Jia Bao Fu
• Keywords: Finite Element Method (FEM), Milling, Nickel-Based Alloy, Simulation, Three Dimensional

References

[1] M. Vaz Jr., Modeling and Simulation of Machining Processes, Arch Comput Methods Eng(2007), Volume 14, issue2, pp.173-204.

[2] Yung-Chang Yen, Estimation of tool wear in orthogonal cutting using the finite element analysis, J Mater Processing Technology, July 2004, Volume 150, issues 1-2, pp.116-123.

[3] A.O. Tay, M.G. de Vahl Davis, Using the finite element method to determine temperature distributions in machining, Proc. Inst. Mech. Eng. 188 (55), pp.627-638.

DOI: 10.1243/pime_proc_1974_188_074_02

[4] M. Lajczok, A study of some aspects of metal machining using the finite-element method, Dissertation Abstracts International. (1981).

[5] Baker M, An investigation of the chip segmentation process using finite elements. Tech Mech 23, pp.1-9.

[6] J.S. Strenkowski, J.T. Carroll, A finite element model of orthogonal metal cutting, ASME J. Eng. Ind. 107, pp.349-354.

DOI: 10.1115/1.3186008

[7] Li R, Shih, Finite element modeling of 3D turning of titanium, Ing J. Mach Tools Manuf 44, pp.933-944.

[8] E. Ceretti, C. Lazzaroni, Turning simulations using a three-dimensional FEM code, J. Mater. Process. Technol. 98, pp.98-103.

DOI: 10.1016/s0924-0136(99)00310-6

[9] Y.B. Guo, Finite element modeling of burr formation process in drilling 304 stainless steel, ASME J. Manuf. Sci. Eng. 122, pp.612-619.

DOI: 10.1115/1.1285885