个人信息Personal information
- 硕士生导师
- 教师英文名称：Siliang Yan
- 教师拼音名称：yansiliang
- 出生日期：1989-09-02
- 电子邮箱：
- 入职时间：2017-07-01
- 所在单位：材料成型及控制工程系
- 学历：研究生(博士)毕业
- 办公地点：材料楼南附楼413
- 性别：男
- 联系方式：13023059157
- 学位：博士学位
- 职称：副教授
- 在职信息：在职
- 其他任职：安徽省机械工程学会锻压专委会副秘书长
- 毕业院校：西北工业大学
- 所属院系：材料科学与工程学院
- 学科：材料加工工程
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论文成果
Eddy current induced dynamic deformation behaviors of aluminum alloy during EMF: Modeling and quantitative characterization
发布时间：2025-01-21 点击次数：
影响因子：6.7
DOI码：10.1016/j.jmatprotec.2018.08.024
所属单位：Hefei University of Technology
发表刊物：Journal of Materials Processing Technology
关键字：Electromagnetic forming Stress response Electroplasticity Strain rate hardening
摘要：Unveiling the quantitative influence of the induced eddy current in electromagnetic forming (EMF) is of great significance to realize the precision control of the forming process. To this end, a semi-phenomenological model for predicting the current-carrying dynamic deformation behaviors of aluminum alloy is established by introducing a rate-dependent electroplasticity (EP) model and an elastic thermal expansion model into the highstrain-rate constitutive model. In the modeling process, the electroplastic energy density (EPED), which is a function of prestrain and current density, is defined as the dominant factor of EP-induced stress drop and its threshold value is determined. Moreover, a rate-dependent factor is formulated to consider the effect of wide range strain rate variation on EP-induced stress drop. Applied to uniaxial-stress EMF process, the present model exhibits preferable prediction accuracy by comparing the predicted results of analytical calculation with experimental ones. The present model captures the characteristic stress responses of EMFed samples, i.e. monotonic strain hardening followed by long-range flow softening. It is found that the peak stress and EP softening ratio both increase with EPED, which can be attributed to the combined influences of increased current density, electric resistivity and acceleration on the competition between strain rate hardening and EP induced softening.
合写作者：Mei Zhan,Xin Zhang
第一作者：Hongwei Li
论文类型：期刊论文
通讯作者：Siliang Yan
学科门类：工学
文献类型：J
卷号：263
页面范围：423–439
是否译文：否
发表时间：2019-01-17
收录刊物：SCI、EI
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0924013618303662?via%3Dihub
附件：
Eddy current induced dynamic deformation behaviors of aluminum alloy during EMF.pdf