Inconel 718微铣削加工表面残余应力有限元仿真

doi:10.12068/j.issn.1005-3026.2017.02.021

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (2): 254-259.DOI: 10.12068/j.issn.1005-3026.2017.02.021

Inconel 718微铣削加工表面残余应力有限元仿真

卢晓红¹，王福瑞¹，路彦君¹，高路丝²

(1. 大连理工大学机械工程学院，辽宁大连116024; 2. 大连理工大学材料科学与工程学院，辽宁大连116024)

收稿日期:2015-10-10 修回日期:2015-10-10 出版日期:2017-02-15 发布日期:2017-03-03
通讯作者: 卢晓红
作者简介:卢晓红(1978-)，女，内蒙古宁城人，大连理工大学副教授，博士.
基金资助:
国家自然科学基金资助项目(51305061)；中国国家留学基金资助项目(201606065043).

Finite Element Simulation of Surface Residual Stress in Micro-milling Inconel 718

LU Xiao-hong¹， WANG Fu-rui¹， LU Yan-jun¹， GAO Lu-si²

1. School of Mechanical Engineering， Dalian University of Technology， Dalian 116024， China; 2. School of Materials Science and Engineering， Dalian University of Technology， Dalian 116024， China.

Received:2015-10-10 Revised:2015-10-10 Online:2017-02-15 Published:2017-03-03
Contact: WANG Fu-rui
About author:-
Supported by:
-

摘要/Abstract

摘要： 刃口圆弧半径和每齿进给量显著影响微铣削镍基高温合金残余应力，因此进行了基于ABAQUS的Inconel 718微铣削三维仿真研究.基于J-C本构方程模拟材料应力应变关系，得到相同单元在S11和S22两个方向的残余应力值，进而研究每齿进给量对表面残余应力的影响规律.进行Inconel 718微铣削实验，通过X射线衍射法测量不同每齿进给量切削过程中工件进给和垂直进给两个方向上的残余应力.进给方向的表面残余应力实测值与仿真结果最大误差为21.1%，平均误差为8.9%;垂直进给方向的表面残余应力实测值与仿真结果最大误差为31.0%，平均误差为12.3%，验证了Inconel 718微铣削加工三维有限元仿真模型的准确性.

关键词: 微铣削, 镍基高温合金, 残余应力, 有限元分析, ABAQUS

Abstract: Rounded cutting edge radius and feed per tooth have significant influence on the residual stress in micro-milling nickel-based superalloy Inconel 718. A 3D finite element model of micro-milling Inconel 718 based on ABAQUS was built. The Johnson-Cook model was adopted to simulate the plastic behavior of workpiece material. Residual stress of the same element in the direction of S11 and S22 was obtained to study the effects of feed per tooth on surface residual stress. Micro-milling experiments of Inconel 718 by changing feed per tooth were conducted， and residual stress was measured by X-ray diffraction in both the feed direction and the vertical direction of feed. In the direction of feed， the maximum relative error between the experimental and simulation results is 21.1% and the average relative error is 8.9%. While in the vertical direction of feed， the maximum relative error between the experimental and simulation results is 31.0% and the average relative error is 12.3%. The results show the validity of the as-built 3D FEM model.

Key words: micro-milling, nickel-based superalloy, residual stress, finite element analysis, ABAQUS

中图分类号:

TH161

卢晓红，王福瑞，路彦君，高路丝. Inconel 718微铣削加工表面残余应力有限元仿真[J]. 东北大学学报:自然科学版, 2017, 38(2): 254-259.

LU Xiao-hong， WANG Fu-rui， LU Yan-jun， GAO Lu-si. Finite Element Simulation of Surface Residual Stress in Micro-milling Inconel 718[J]. Journal of Northeastern University Natural Science, 2017, 38(2): 254-259.

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Inconel 718微铣削加工表面残余应力有限元仿真

Finite Element Simulation of Surface Residual Stress in Micro-milling Inconel 718

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