多工序成形混合硬化模型及其在高强钢回弹补偿中的应用

陈江; 陈文亮; 姚翔; 王会廷

doi:10.13433/j.cnki.1003-8728.2018.0714

多工序成形混合硬化模型及其在高强钢回弹补偿中的应用

doi: 10.13433/j.cnki.1003-8728.2018.0714

陈江¹,
陈文亮^1, ,,
姚翔²,
王会廷³

1.
南京航空航天大学机电学院, 南京 200016;
2.
美国工程技术联合公司南京代表处, 南京 210001;
3.
安徽工业大学冶金工程学院, 安徽马鞍山 243032

基金项目:

国家自然科学基金项目（51505218）资助

详细信息

作者简介:
陈江(1980-),博士研究生,研究方向为板料成形CAE技术,chenjiang@nuaa.edu.cn

通讯作者:
陈文亮,教授,博士生导师,博士,cwlme@nuaa.edu.cn

计量
- 文章访问数: 177
- HTML全文浏览量: 21
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2017-08-10
- 刊出日期: 2018-07-05

Combined Hardening Model for Multi-stage Forming and its Application in Spring-back Compensation of High Strength Steel

1.
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2.
Engineering Technology Association Nanjing representative office, Nanjing 210001, China;
3.
School of Metallurgical Engineer, Anhui University of Technology, Anhui Maanshan 243032, China

摘要

摘要: 回弹缺陷是高强钢板料冲压时的一大难题，尤其对于多工序成形的零件，内应力作用引起的回弹问题更加复杂。在准确预测回弹的基础上修改模具型面的回弹补偿方案是解决这一问题的关键。为此，采用一种多工序混合硬化模型，结合有限元分析工具Ls-Dyna以及Ls-Opt，对模具型面迭代补偿。在自行改装的实验平台上，一项对高强钢DP600的循环拉伸压缩实验表明，与其他材料硬化模型相比，多工序混合硬化模型在多轴向的拉伸压缩实验中应力应变曲线的预测精度更高。某汽车A柱的多工序成形的回弹补偿结果证明该方法方便实用且精度高。
- 多工序 /
- 板料成形 /
- 混合硬化模型 /
- 回弹补偿
Abstract: Spring-back defect is considered to be a major problem in forming process of high strength steel, especially multi-stage forming, as the spring-back is more complicated due to an action of internal stress. The compensation method by adjusting tool shape geometry based on accurate spring-back prediction is the key to solve the problem. The combined hardening model for multi-stage forming is presented, and an iterated compensation method is applied with Ls-Dyna and Ls-Opt. In a self-designed experimental platform, the prediction model is shown to be more accurate in multi-axial tension and compression of DP600 comparing with other models. The compensation method is applied to the numerical simulation forthe multi-stage manufacturing process of an A-pillar, the experimental result demonstrates the feasibility and accuracy.
- multi-stage /
- sheet metal forming /
- combined hardening /
- spring-back compensation

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参考文献(11)

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