锻压技术

不同应变路径下高强度钢板料成形数值模拟分析

英文标题：Numerical simulation of high strength steel sheet metal forming in different strain paths

作者：齐振杰夏琴香戚春晓邱遵文

分类号：TG386

出版年,卷(期):页码：2013,38(1):35-39

摘要：

以某汽车安装座零件的正反拉深工序为研究对象，利用有限元数值模拟研究方法，探讨了不同应变路径对板料成形性能的影响。结果表明：应变路径的变化对冲压成形的成形质量有很大影响，通过改变冲压件成形危险处的应变路径可以提高成形质量；确定凸包高度为33mm，圆角半径为20mm的方案为安装座零件的优化成形方案，该方案能充分利用安装座零件的成形性能，实现较好的成形质量；运用有限元数值模拟技术可以很好地预测复杂形状零件成形以及多工步成形。

By means of finite element numerical simulation, the forward and reverse drawing process of the automotive soleplate component part was studied, and the properties of sheet metal forming in different strain paths conditions were discussed. The results indicate that the stamping forming quality is greatly influenced by the change of strain path and the stamping forming quality can be improved by the strain paths of forming dangerous point. Convex hull height of 33 mm, corner radius of 20 mm are determined as optimized forming plan for automotive soleplate component parts, and automotive soleplate component parts forming performance can be fully used to achieve better forming qualities in the plan. Complex shape parts forming and multistep forming can be well predicted using the finite element numerical simulation method.

基金项目：

广东省高等学校高层次人才项目（x2jqN9101140）；广东省教育部产学研项目（2010B090400094）

参考文献：

［1］Graf A, Hosford W. The influence of strainpath changes on forming limit diagrams of Al 61112T4[J]. Int.J.Mech. Sci., 1994，36(10): 897-910.
［2］Xu S G，Weinmann K J. Prediction of forming limit curves of sheet metals using Hillps 1993 user-friendly yield criterion of anisotropic materials[J]. Int. J. Mech. Sci., 1998,40(9):913-925.
［3］Banabic D. Limit strains in the sheet metals by using the new hillps yield criterion(1993)[J]. Journal of Materials Processing Technology, 1999，(9293): 429-432.
［4］Brunet M, Mguil S, Morestin F. Analytical and experi mental studies of necking in sheet metal forming processes[J] J.Mater.Process.Tech., 1998，(8081)：40-46.
［5］Rao U S, Chaturvedi R C. Sheet metal forming limits under complex strain paths using shear instability criterion[A]. Proc.1st ICTP[C]. Tokyo, 1984.
［6］Keeler S P, Brazier W G. Relationship between laboratorymaterial characterization and press shop formability[A]. In:Proc of Microalloying 75[C]. New York,1977.
［7］Wei Guang-ming, Xia Qin-xiang, Zhang Sai-jun, et al. Layout design for high strength steel automotive structural parts based on UG-PDW[A]. The 2nd International Conference on Mechanic Automation and Control Engineering[C]. MACE 2011, Inner Mongolia,2011.
［8］陈志超, 夏琴香, 郭新年, 等. 某高强钢板汽车结构件多工位级进模设计[J]. 锻压技术，2012, 37(2): 47-50.
［9］各种材料摩擦系数表[EB/OL]. http:∥www.zgmccl.com/viewnews.asp?newsid=282.
［10］张晓静, 周贤宾, 李新军, 等. 汽车覆盖件多工步成形数值模拟技术研究[J]. 塑性工程学报，2001, 3(1): 25-30.

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