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铝合金型材多点拉弯成形的数值模拟
英文标题:Numerical simulation of multi-point bend-stretch forming process of aluminum profiled material
作者:王少辉 蔡中义 李明哲  
单位:吉林大学辊锻工艺研究所  
关键词:多点拉弯成形  截面凹陷  矩形截面  压痕  成形精度 
分类号:TG359
出版年,卷(期):页码:2010,35(2):66-70
摘要:
多点成形技术的核心是实体模具被离散的多点模具代替,实现了柔性成形。铝合金型材的拉弯成形中,可以用多点模具代替实体模具,实现了一套模具成形多种零件的可能,节省大量的费用和时间。本文提出了多点拉弯成形的构想,比较了多点模具和实体模具成形铝合金型材的成形效果,结果表明,多点模具可以用于型材的拉弯成形;并分析了多点拉弯成形过程中产生压痕缺陷的原因,提出通过弹性垫技术消除压痕的方法;对比了多点拉弯件的轮廓曲线和目标轮廓曲线,验证了多点拉弯成形技术的成形精度。
The core of multi-point forming(MPF) is that the traditional solid stretch die is replaced by discrete multi-point die.This technology realizes the flexible fabrication.The solid die can be replaced by multi-point die in the bend-stretch forming process of aluminum profiled material and these can save the cost and time of die fabrication for products.The idea of the multi-point bend-stretch forming was put forward.By comparing the forming results of solid die and the forming results of multi-point die,it shows that multi-point technology can be applied in the forming of aluminum profiled material.The impresses can appear in the process of multi-point bend-stretch,which can be suppressed by using the elastic-cushion.The shaping accuracy was validated by comparing the target of curve with the outline curve on the formed parts.
基金项目:
国家自然科学基金资助项目(50775098);; 吉林大学“985工程”资助项目
作者简介:
参考文献:
[1]万敏,洪振军,李卫东,等.大型异型材拉弯成形有限元模拟技术研究[J].锻压技术,2008,33(5):160-163.
[2]朱正光,杨晓红.拉弯工艺的数学力学分析[J].锻压技术,2008,32(3):152-154.
[3]Li M Z,Cai Z Y,Liu C G,et al.,Recent developments inmulti-point forming technology[A].Proceedings of the 8thInternational Conference on Technology of Plasticity[C].Edizioni Progetto Padova,Verona,Italy,2005.
[4]周朝晖,蔡中义,李明哲.多点模具的拉形工艺和数值模拟[J].吉林大学学报:工学版,2005,35(3):287-291.
[5]Clausen A H,Hopperstad O S,Langsethm.Sensitivity ofmodel parameters in stretch-bending of aluminium extrusions[J].International Journal of Mechanical Sciences,2001,(43):427-453.
[6]金朝海,周贤宾,刁可山,等.铝合金矩形管拉弯成形过程的数值模拟[J].材料科学与工艺,2004,12(6):572-575.
[7]Miller J E,Kyriakides S,Bastard A H,On bend-stretch formingof aluminum extruded tubes I:experi ments[J].InternationalJournal of Mechanical Sciences 2001,43:1283-1317.
[8]Miller J E,Kyriakides S,Coron E,On bend-stretch formingof aluminum extruded tubesⅡ:analysis[J].InternationalJournal of Mechanical Sciences,2001,43:1319-1338.
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