锻压技术

1060铝板渐进成形极限及影响因素

英文标题：Incremental forming limit and influencing factors for 1060 aluminum sheet

作者：赵伟滕培秀詹艳然丁科苏龙水

单位：1.福州大学至诚学院福建福州 350002 2.福州大学机械学院福建福州 350108

分类号：TG376

出版年,卷(期):页码：2019,44(5):63-68

摘要：

目前,渐进成形极限曲线（FLC）主要采用实验方法获得，耗时、耗材，且无统一的制作标准。针对理论预测方法较少的问题，借助少量实验，采用Lemaitre韧性断裂准则，预测1060铝板渐进成形极限曲线，进而将预测曲线与实验曲线进行对比，研究工艺参数对渐进成形极限曲线的影响。结果表明，Lemaitre韧性断裂准则能较好地预测1060铝板渐进成形极限曲线，该方法可运用于渐进成形极限曲线的预测。渐进成形中，层间距越小，工具头转速越高或进给速度越低，板料成形极限曲线越高,板料越不容易开裂，成形性能越好。工具头半径在一定条件下，对成形极限曲线的高度影响并不明显。

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.

基金项目：

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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