Identification of Friction Characteristics and Flow Stress of 0.45% Carbon Steel during Cutting Process

Abstract:

Nowadays, numerical simulation technique is used to predict machining states such as cutting forces, stresses and temperature distribution. However, it is difficult to simultaneously estimate the stress-strain relationship of the workpiece and friction characteristics between tool-chips during cutting process. The aim of this study is to propose a new method to identify friction characteristics and flow stress of 0.45% carbon steel for FEM simulation during cutting process. Shear friction equation had been applied to estimate the friction characteristics and the Johnson-Cook (JC) constitutive equation work flow stress model was considered as a function of strain, strain rate and temperature to determine characteristics of workpiece flow stress. As a result, friction characteristics and flow stress of 0.45% carbon steel during cutting process had been estimated applying this proposed method.

• Periodical: Advanced Materials Research (Volume 1101)
• Pages: 402-405
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1101.402
• Online since: April 2015
• Authors: Norfariza Wahab*, Hiroyuki Sasahara
• Keywords: FEM Simulation, Flow Stress, Friction Characteristics

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