SIMULATION STUDY TO VERIFY THE EFFECT OF CUTTING PARAMETERS ON CHIP  SHINKEGE COEFICIENT DURING MACHINING PROCESS OF ALUMINUM ALLOY

Pham Thi Hoa; Nguyen Duc Toan

Pham Thi Hoa Hung Yen University of Technology and Education
Nguyen Duc Toan Hung Yen University of Technology and Education

Keywords: Chip shrinkage coefficient, the Bao-Wierzbicki fracture model, modified Mohr-Coulomb criteria, A6061 aluminum alloy, simulation of the cutting process

Abstract

This paper presents a numerical study on parameters of the chip produced in high-speed milling of aluminum alloy considering the effect of cutting depth and speed. First, a finite element model was created by the ABAQUS / Explicit finite element simulation software, based on the Bao-Wierzbicki (B-W) fracture model with a modified Mohr-Coulomb criterion. The model verification was made by comparing the simulated chip thickness to that obtained by theoretical formulae. Then, the effect of cutting depth and speed on the chip thickness, chip shrinkage coefficient and shear angle of the chip were investigated. The simulation results showed that the chip thickness reduced with increasing cutting speed. In addition, increasing cutting speed or cutting depth reduces the chip shrinkage coefficient, but increases the shear angle of chip

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