Finite Element Analysis of Adiabatic Shear Band Formation during Orthogonal Metal Cutting

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In serrated chips of difficult-to-machining materials such as medium carbon steel and titanium alloy during metal cutting process at high strain rates, the fine grain structure of the narrow shear bands which results from thermal softening due to severe deformation have been observed. However, the theories which have been developed to analyze continuous chip formation and most FEM analyses based on the conventional models such as Johnson-Cook and Zerilli-Armstrong flow stress model fail to explain the adiabatic shear band formation and the serrated chip formation. This paper discusses the characteristic of the new flow stress model in the previous investigation [1,2] and FEM simulation results to predict the serrated chip formation results are shown.

Info:

Periodical:

Key Engineering Materials (Volumes 345-346)

Edited by:

S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim

Pages:

885-888

Citation:

S. H. Rhim et al., "Finite Element Analysis of Adiabatic Shear Band Formation during Orthogonal Metal Cutting ", Key Engineering Materials, Vols. 345-346, pp. 885-888, 2007

Online since:

August 2007

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$38.00

[1] S.H. Rhim, H.W. Park, S.I. Oh: CIRP January Meeting, Paris (2002).

[2] S. H Rhim, S.I. Oh: Journal of Materials Processing Technology, Vol. 171 (2006), p.417.

[3] B.E. Klamecki: Ph.D. Dissertation, University of Illinois at Urbana Champaign (1973).

[4] G.R. Johnson, W.H. Cook: Proceedings of the 7 th International Symposium on Ballistics, Am. Def. Ass. (ADPA), Netherlands (1983), p.541.

[5] F.J. Zerilli, R.W. Armstrong: Journal of Applied Physics, Vol. 61 (1987), p.1816.

[6] S.I. Oh, W.T. Wu, J.P. Tang, A. Vedhanayagam: Journal of Materials Processing Technology, Vol. 27 (1991), pp.25-0 o C 500 1000 1500 2000 Cutting Speed = 10m/sec Cutting Speed = 15m/sec Tool Tool Workpiece Workpiece.

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