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

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.

Key Engineering Materials (Volumes 345 - 346)
Edited by
S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim
Sung Han Rhim et al., 2007, Key Engineering Materials, 345-346, 885
Online since
August 2007
US$ 28,-
Authors: Dong Jin Zhang, Gang Liu, X. Sun, Ming Chen
Abstract:The nickel-based superalloy GH4169 is a typical difficult-to-cut material, but it has been used in a good many kinds of aeronautical key...
Authors: Chun Zheng Duan, Min Jie Wang, Tao Dou
Abstract:The microstructure observation and microhardness measurement were performed on the adiabatic shear bands in primary shear zone in the...
Authors: Guo He Li, Tie Li Qi, Yu Jun Cai, Hong Jun Wang
Abstract:Orthogonal cutting experiments of hardened AISI1045 steel(45HRC) are performed to investigate the influence of cutting conditions on...
Authors: Guo He Li, Min Jie Wang
Abstract:Orthogonal cutting experiments of Fe-36Ni invar alloy are performed to investigate the influence of cutting conditons on adiabtic shear,...
Authors: J.Q. Li, Tao Tao Dong, Min Jie Wang
Abstract:The adiabatic shear, which may produce serrated chip, usually occurs for a large number of materials in high speed machining. Adiabatic shear...