PARAMETER OPTIMIZATION OF JC CONSTITUTIVE MODEL OF AL7050 ALLOY BASED ON OXLEY’S THEORY

WANG Yun; ZHANG ChangMing; ZHANG Yu

doi:10.16579/j.issn.1001.9669.2021.02.010

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PARAMETER OPTIMIZATION OF JC CONSTITUTIVE MODEL OF AL7050 ALLOY BASED ON OXLEY’S THEORY

更新时间：2022-09-22

- PARAMETER OPTIMIZATION OF JC CONSTITUTIVE MODEL OF AL7050 ALLOY BASED ON OXLEY’S THEORY
- Journal of Mechanical Strength Vol. 43, Issue 2, Pages: 313-318(2021)
- 作者机构：
  
  1. 陕西理工大学机械工程学院
  2. 陕西省工业自动化重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2021.02.010
  CLC：
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WANG Yun, ZHANG ChangMing, ZHANG Yu. PARAMETER OPTIMIZATION OF JC CONSTITUTIVE MODEL OF AL7050 ALLOY BASED ON OXLEY’S THEORY. [J]. 43(2):313-318(2021)
DOI：

WANG Yun, ZHANG ChangMing, ZHANG Yu. PARAMETER OPTIMIZATION OF JC CONSTITUTIVE MODEL OF AL7050 ALLOY BASED ON OXLEY’S THEORY. [J]. 43(2):313-318(2021) DOI： 10.16579/j.issn.1001.9669.2021.02.010.

摘要

针对Al7050合金在切削加工中易变形的问题,以构建适用于实际切削加工中的JC本构模型为目的。依据Oxley’s理论建立了求解模型,采用遗传算法并结合试验数据求得Al7050合金的JC本构模型参数,并以切削力为参评指标对JC本构模型进行验证。结果表明:构建的JC本构模型的应变范围为0.80～1.01,应变率范围为1.6×10~3s,-1,～2×10~4s,-1,温度范围为96.48℃～213.07℃;采用自定义材料模型的主切削力和进给力仿真值与试验值的平均误差分别为4.79%和16.08%,而采用软件自带材料模型的主切削力和进给力仿真值与试验值的平均误差分别为15.08%和25.97%,得出了采用自定义材料模型的切削力仿真值与试验结果更吻合的结论。

Abstract

Aiming at the problem that Al7050 alloy is easy to deform in cutting process,the JC constitutive model suitable for practical cutting is established. Based on Oxley’s theory,a solution model was established. The JC constitutive model parameters of Al7050 alloy were obtained by using genetic algorithm and experimental data,and the JC constitutive model was verified by using cutting force as evaluation index. The results show that the strain range of JC constitutive model is 0. 80 ～ 1. 01,the strain rate range is 1. 6 × 10~3 s,-1,～ 2 × 10~4 s,-1,and the temperature range is 96. 48 ℃ ～ 213. 07 ℃ . The average errors of the simulation and test values of the main cutting force and feed force using the custom material model are 4. 79% and 16. 08%,respectively. The average errors of the simulation and test values of the main cutting force and feed force of the material model with the software are 15. 08% and 25. 97% respectively,and the conclusion that the simulation value of the cutting force with the custom material model is more consistent with the test result is drawn.

关键词

Al7050合金Oxley’s理论正交切削遗传算法

Keywords

Al7050 alloyOxley’s theoryOrthogonal cuttingGenetic algorithms

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School of Electrical Engineering,Hebei University of Technology

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