Transactions of Materials and Heat Treatment

Title：Incremental forming limit and influencing factors for 1060 aluminum sheet

Authors： Zhao Wei1 Teng Peixiu2 Zhan Yanran2 Ding Ke1 Su Longshui1

Unit： 1.College of Zhicheng Fuzhou University Fuzhou 350002 China 2.College of Mechanical Engineering Fuzhou University Fuzhou 350108 China

KeyWords： ductile fracture criterion 1060 aluminum sheet incremental forming forming limit curve (FLC)

ClassificationCode：TG376

year,vol(issue):pagenumber：2019,44(5):63-68

Abstract：

The forming limit curve(FLC) of incremental forming is obtained mainly by experimental method, which requires a lot of manpower and material resources, and it is lack of uniform standard to make it. For the problem of less theoretical prediction methods, the limit curve of incremental forming for 1060 aluminum sheet was predicted by a few experiments and Lemaitre ductile fracture criterion, and the influences of process parameters on Limit curve of in cremental forming were studied by comparing the predicted curve with the experimental curve. The results show that the Lemaitre ductile fracture criterion can predict the incremental forming limit curve of 1060 aluminum sheet well, and this method can be used to predict the incremental forming limit curve. In incremental forming, the smaller the layer spacing is, the higher the tool head speed is and the lower the feeding speed is, the higher the forming limit curve of sheet is. Thus, the sheet metal is less easy to crack, and the forming performance is better. However, the radius of tool head under a certain condition has little influence on forming limit curve.

Funds：

福建省教育厅科技项目（JT180815）；国家级大学生创新创业训练计划项目（201713470003）；国家级大学生创新创业训练计划项目（201813470004）

作者简介：赵伟（1987-），男，硕士，讲师 Email：464228854@qq.com

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