锻压技术

拼焊板盒形件充液拉深的数值模拟

英文标题：Numerical simulation of hydro-forming of tailor welded blanks

作者：汪建敏赵燕姜银方武立波陈典剑

单位：江苏大学材料科学与工程学院江苏大学材料科学与工程学院江苏大学机械工程学院江苏大学机械工程学院江苏大学材料科学与工程学院江苏镇江212013 江苏镇江212013 江苏镇江212013 江苏镇江212013 江苏镇江212013

关键词：拼焊板充液拉深数值模拟焊缝移动

分类号：TG386

出版年,卷(期):页码：2007,32(2):28-32

摘要：

随着汽车行业对能源消耗和汽车尾气排放的要求,应用拼焊板成形技术显得越来越重要。以差厚拼焊板拉深方盒件为研究对象,采用板料成形分析软件DYNAFORM对充液拉深和传统拉深工艺进行分析和对比。研究发现,盒形件不同部位其焊缝有不同的移动趋势,传统拉深最大焊缝移动量发生在盒形件底部中心处,充液拉深件焊缝移动最大量发生在侧壁顶部,增大充液拉深凹模油腔的压力,可以有效地减少焊缝移动量和坯料的减簿量。

Due to the requirements to save the energy and to reduce the tail gas in automobile,making good use of forming technologies in the tailor-welded blanks(TWBs) becomes more and more important.The tailor-welded blanks with different thickness drawn into square cup were taken as an example and the hydro-forming drawing process was numerically simulated with sheet forming software DYNAFORM by contrast to conventional drawing.The conclusions show that different tendencies of weld-line movement occur in different positions of square cups,and the maximal weld-line movement occurs in the bottom center during the conventional drawing while it occurs in the jamb wall during the hydro-forming.Meanwhile,high-grade products with small weld-line movement and small reduction in slab thickness can be gained when the oil pressure is increased.

基金项目：

江苏省高校自然科学基金资助项目(05KJD460044)

参考文献：

[1]姜银方,杨继昌,陈炜.拼焊板冲压成形研究的现状和发展趋势[J].汽车工程,2003,25(4):410-414.
[2]Palumbo G,Zhang S H,Tricarico L,et al.Numerical/ex-peri mental investigations for enhancing the sheet hydroform-ing process[J].International Journal of Machine Tools&Manufacture,2006,46:1212-1221.
[3]张士宏,许沂,马占国,等.拼焊板方盒件拉深非均匀变形的计算机模拟研究[J].塑性工程学报,2001,8(2):49-51.
[4]Pallett RJ,Lark RJ.The use of tailored blanksinthe manu-facture of construction components[J].Journal of MaterialsProcessing Technology,2001,117:249-254.
[5]方井柱,陈炜,袁国定,等.差厚拼焊板拉延反鼓包方盒件的成形性研究[J].塑性工程学报,2003,10(3):26-29.
[6]郝长岭,周贤宾.拼焊板成形极限研究进展[J].锻压技术,2006,31(3):19-22.
[7]Youho Choi,Youngmoo Heo,Heon Young Ki m,et al.In-vestigations of weld-line movements for the deep drawingprocess of tailor welded blanks[J].Journal of MaterialsProcessing Technology,2000,108,(11):1-7.
[8]张士宏,许沂,王忠堂,等.板材零件成对液压成形新技术[J].哈尔滨工业大学学报,2000,32(4):7-9.
[9]Anand D,Chen D L,Bhole S D,et al.Fatigue behavior oftailor(laser)-welded blanks for automotive applications[J].Materials Science and Engineering A,2006,420:199-207.

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