Simulation of micro-milling Inconel 718 considering scale effect

被引：5

作者：

Lu, Xiaohong ^{[1
]}

Jia, Zhenyuan ^{[1
]}

Zhang, Haixing ^{[1
]}

Qiao, Jinhui ^{[1
]}

Feng, Yixuan ^{[2
]}

Liang, Steven Y. ^{[2
]}

机构：

[1] Dalian Univ Technol, Minist Educ, Key Lab Precis & Nontradit Machining Technol, Dalian, Peoples R China

[2] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2020年 / 108卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Micro-milling; Scale effect; Strain gradient plasticity theory; Constitutive equation; Process simulation; EDGE RADIUS; GRADIENT; PLASTICITY;

D O I：

10.1007/s00170-020-05426-3

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

To study the scale effect during micro-milling process, we establish a modified Johnson-Cook (JC) constitutive model to describe the strengthening behavior of materials on microscale based on the theory of strain gradient plasticity. The VUMAT constitutive subroutine of Inconel 718 is programmed. The radius of the tool edge and its influence on the rake angle are considered. Based on the modified JC constitutive equation, the simulation of micro-milling Inconel 718 process is achieved. The micro-milling Inconel 718 experiments are conducted. The accuracy of the simulation of micro-milling Inconel 718 process considering scale effect is verified by comparing cutting force from experiments with simulation outputs based on the traditional as well as modified JC constitutive equation. It is proved that the simulation outputs of the micro-milling process based on the modified JC constitutive equation are more consistent with the experimental results.

引用

页码：671 / 681

页数：11

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