Numerical analysis of serrated chip formation mechanism with Johnson-Cook parameters in micro-cutting of Ti6Al4V

Zhongpeng Zheng; Chenbing Ni; Yun Yang; Yuchao Bai; Xin Jin

doi:10.3390/met11010102

Numerical analysis of serrated chip formation mechanism with Johnson-Cook parameters in micro-cutting of Ti6Al4V

Zhongpeng Zheng, Chenbing Ni, Yun Yang, Yuchao Bai^*, Xin Jin^*

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Previous studies have reported significant differences in the Johnson-Cook (J-C) parameters of Ti6Al4V alloy. Thus, various serrated chip morphologies, cutting forces, and cutting temperatures are obtained when different constitutive parameters are used for numerical and simulation analyses, which decreases the reliability of the simulation model. Therefore, it is necessary to inves-tigate and analyze simulation errors due to differences in the J-C parameters. In this study, the mechanism of the serrated chip formation of Ti6Al4V is thoroughly analyzed using the uniformly proportional J-C parameters. The serrated chip sensitivity, shear band spacing, serrated segmenta-tion frequency, chip serration intensity, temperature field, strain energy, and cutting force is obtained. This study aims to improve the accuracy and reliability of the micro-cutting simulation mod-els, as well as a reference for the selection of J-C constitutive parameters of simulation with Ti6Al4V manufactured with different heat treatments and additive manufacturing.

Original language	English
Article number	102
Pages (from-to)	1-22
Number of pages	22
Journal	Metals
Volume	11
Issue number	1
DOIs	https://doi.org/10.3390/met11010102
Publication status	Published - Jan 2021

Keywords

Cutting simulation
Micro-cutting
Numerical analysis
Serrated chip

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10.3390/met11010102

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title = "Numerical analysis of serrated chip formation mechanism with Johnson-Cook parameters in micro-cutting of Ti6Al4V",

abstract = "Previous studies have reported significant differences in the Johnson-Cook (J-C) parameters of Ti6Al4V alloy. Thus, various serrated chip morphologies, cutting forces, and cutting temperatures are obtained when different constitutive parameters are used for numerical and simulation analyses, which decreases the reliability of the simulation model. Therefore, it is necessary to inves-tigate and analyze simulation errors due to differences in the J-C parameters. In this study, the mechanism of the serrated chip formation of Ti6Al4V is thoroughly analyzed using the uniformly proportional J-C parameters. The serrated chip sensitivity, shear band spacing, serrated segmenta-tion frequency, chip serration intensity, temperature field, strain energy, and cutting force is obtained. This study aims to improve the accuracy and reliability of the micro-cutting simulation mod-els, as well as a reference for the selection of J-C constitutive parameters of simulation with Ti6Al4V manufactured with different heat treatments and additive manufacturing.",

keywords = "Cutting simulation, Micro-cutting, Numerical analysis, Serrated chip",

author = "Zhongpeng Zheng and Chenbing Ni and Yun Yang and Yuchao Bai and Xin Jin",

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year = "2021",

month = jan,

doi = "10.3390/met11010102",

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AU - Zheng, Zhongpeng

AU - Ni, Chenbing

AU - Yang, Yun

AU - Bai, Yuchao

AU - Jin, Xin

PY - 2021/1

Y1 - 2021/1

N2 - Previous studies have reported significant differences in the Johnson-Cook (J-C) parameters of Ti6Al4V alloy. Thus, various serrated chip morphologies, cutting forces, and cutting temperatures are obtained when different constitutive parameters are used for numerical and simulation analyses, which decreases the reliability of the simulation model. Therefore, it is necessary to inves-tigate and analyze simulation errors due to differences in the J-C parameters. In this study, the mechanism of the serrated chip formation of Ti6Al4V is thoroughly analyzed using the uniformly proportional J-C parameters. The serrated chip sensitivity, shear band spacing, serrated segmenta-tion frequency, chip serration intensity, temperature field, strain energy, and cutting force is obtained. This study aims to improve the accuracy and reliability of the micro-cutting simulation mod-els, as well as a reference for the selection of J-C constitutive parameters of simulation with Ti6Al4V manufactured with different heat treatments and additive manufacturing.

AB - Previous studies have reported significant differences in the Johnson-Cook (J-C) parameters of Ti6Al4V alloy. Thus, various serrated chip morphologies, cutting forces, and cutting temperatures are obtained when different constitutive parameters are used for numerical and simulation analyses, which decreases the reliability of the simulation model. Therefore, it is necessary to inves-tigate and analyze simulation errors due to differences in the J-C parameters. In this study, the mechanism of the serrated chip formation of Ti6Al4V is thoroughly analyzed using the uniformly proportional J-C parameters. The serrated chip sensitivity, shear band spacing, serrated segmenta-tion frequency, chip serration intensity, temperature field, strain energy, and cutting force is obtained. This study aims to improve the accuracy and reliability of the micro-cutting simulation mod-els, as well as a reference for the selection of J-C constitutive parameters of simulation with Ti6Al4V manufactured with different heat treatments and additive manufacturing.

KW - Cutting simulation

KW - Micro-cutting

KW - Numerical analysis

KW - Serrated chip

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ER -

Numerical analysis of serrated chip formation mechanism with Johnson-Cook parameters in micro-cutting of Ti6Al4V

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