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工程设计学报
工程设计学报  2017, Vol. 24 Issue (6): 668-674    DOI: 10.3785/j.issn.1006-754X.2017.06.009
建模、分析、优化和决策     
基于混合硬化模型的TRIP780高强钢双C梁扭曲回弹仿真与试验
黄仁勇, 谢延敏, 唐维, 张飞, 潘贝贝
西南交通大学 机械工程学院, 四川 成都 610031
Experiment and simulation on twist springback for the double C rail of TRIP780 high strength steel based on mixed hardening model
HUANG Ren-yong, XIE Yan-min, TANG Wei, ZHANG Fei, PAN Bei-bei
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
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摘要：

为了实现扭曲回弹的精确预测，在高强度钢板冲压成形中必须对工艺参数进行有效控制。基于试验数据，利用响应面法和遗传算法对Voce非线性各向同性硬化模型和Chaboche非线性随动硬化模型组成的混合硬化模型参数进行反求。基于三维空间两异面直线夹角，提出一种评价扭曲回弹的指标。利用液压机进行TRIP780高强钢双C梁扭曲回弹试验，并且利用三坐标测量仪测量扭曲回弹角。利用基于双C梁有限元模型建立的回弹角响应面模型预测值逼近回弹角的测量值，从而确定混合硬化模型参数。为了实现扭曲回弹的精确预测，在冲压成形中必须对有效的工艺参数进行控制。基于已验证的双C梁有限元模型，利用极差分析方法对相关因素进行分析，确定影响扭曲回弹的关键因素。研究结果表明，对扭曲回弹影响较大的因素依次为摩擦系数μ、压边力FN、凹模圆角半径R1和R2，为扭曲回弹的有效控制提供一定的理论依据。
关键词： 混合硬化模型;  TRIP780;  参数反求;  扭曲回弹    
Abstract:

In order to realize the accurate prediction of the twist springback, the process parameters must be controlled efficiently in the stamping of high strength steel sheet. The parameters of mixed hardening model based on Voce nonlinear isotropic hardening model and Chaboche nonlinear kinematic hardening model were inverted by using the response surface methodology and genetic algorithm combined with the experimental data. An evaluation index for the twist springback was proposed, which was based on the angle between two lines in different planes. The experiment of twist springback for TRIP780 high strength steel was carried out by the hydraulic press, and the twist springback angle was measured by the three-coordinate measuring instrument. The response surface model of springback angle was established based on the finite element model of the double C rail, and the parameters of mixed hardening model were determined by using the approximation of the predicted value and measured springback angle. The related factors were analyzed by the extreme difference analysis method based on the validated finite element model of the double C rail, and the key factors affecting the twist springback were determined. The results showed that the factors which had great influences on the twist springback were the friction coefficient μ, the holder force FN, and the die fillet radius R1 and R2, so it provides a theoretical basis for the effective control of the twist springback.
Key words: mixed hardening model    TRIP780    parameter inversion    twist springback
收稿日期: 2017-06-08 出版日期: 2017-12-28
CLC:  TG386.41  
基金资助:

国家自然科学基金资助项目（51005193）；国家大学生创新创业训练计划项目（201710613033）
通讯作者: 谢延敏(1975-),男,四川安岳人,副教授,博士,从事先进塑性加工技术仿真和稳健设计等研究,E-mail:xie_yanmin@swjtu.edu.cn,http://orcid.org/0000-0001-5056-4232     E-mail: xie_yanmin@swjtu.edu.cn
作者简介: 黄仁勇(1992-),男,重庆巫山人,硕士生,从事板料冲压成形中的扭曲回弹研究,E-mai:renyong-huang@my.swjtu.edu.cn,http://orcid.org/0000-0002-3744-5527
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引用本文:

黄仁勇, 谢延敏, 唐维, 张飞, 潘贝贝. 基于混合硬化模型的TRIP780高强钢双C梁扭曲回弹仿真与试验[J]. 工程设计学报, 2017, 24(6): 668-674.

HUANG Ren-yong, XIE Yan-min, TANG Wei, ZHANG Fei, PAN Bei-bei. Experiment and simulation on twist springback for the double C rail of TRIP780 high strength steel based on mixed hardening model[J]. Chinese Journal of Engineering Design, 2017, 24(6): 668-674.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2017.06.009    或    https://www.zjujournals.com/gcsjxb/CN/Y2017/V24/I6/668

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