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摘要：
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以50CrVA弹簧钢带为原材料,采用冲孔落料复合工艺及浅拉深工艺制造了汽车喇叭膜片。应用有限元模拟程序ANSYS/LS-DYNA将显式和隐式算法相结合,对汽车喇叭膜片的拉深成形和回弹进行了模拟。结果表明:膜片的顶部平面处回弹最小,平面法兰处的回弹最大;锥面处的回弹随着距约束点距离的增大而逐渐增大。而且,回弹值随着膜片厚度的增加而减小。因此,可根据此结果对成形模尺寸进行回弹补偿,制出尺寸精确的膜片,以满足实际生产的需要。
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With primary material of spring steel band 50CrVA,automotive horn diaphragms were made by punching-blanking process and shallow drawing process. The finite-element code ANSYS/LS-DYNA was applied to simulate the drawing process and springback of automotive horn diaphragm by combining explicit and implicit algorithm. The results show that the least springback occurs on the top plane of diaphragm,and the largest springback occurs in the plane flange. The springback of pyramidal face increases with the increase of distance to the constrained points. Moreover,the springback value decreases with the increase of diaphragm thickness. Therefore,springback compensation can be applied to the sizes of forming die based on the results,and precision diaphragm can be manufactured to meet the production demand.
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基金项目：
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哈尔滨工程大学校内基金资助项目(HEUFT06040)
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作者简介：
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参考文献：
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[1]薛松,周杰,罗征志,等.保险杠内板成形回弹模拟分析及工艺控制[J].锻压装备与制造技术,2005,(4):57-59.
[2]罗云华,王磊.高强钢板冲压回弹影响因素研究[J].锻压技术,2009,34(1):23-26.
[3]倪洪启,张金萍,王树强,等.超级钢板U型弯曲回弹的数值模拟和实验研究[J].锻压技术,2009,34(1):39-41.
[4]叶郁文,王振林,潘钧俊,等.蜗牛式电喇叭膜片振动对声特性的影响研究[J].振动与冲击,2001,20(2):56-58.
[5]季强,蒋伟康,戚方好.汽车喇叭膜片寿命的影响因素分析及其优化设计[J].振动与冲击,2007,26(5):112-114.
[6]焦明华,于军涛,解挺,等.板材冲压成形回弹模拟的评述[J].锻压技术,2007,32(6):1-5.
[7]李健,赵军,高颖,等.宽板V型自由弯曲回弹模拟精度及回弹影响因素研究[J].燕山大学学报,2008,32(3):193-196.
[8]Chen P,Koc M.Si mulation of springback variation in form-ing of advanced high strength steels[J].Journal of Materials Processing Technology,2007,(190):189-198.
[9]Panthi S K,Ramakrishnan N,Pathak K K,et al.An analy-sis of springback in sheet metal bending using finite element method(FEM)[J].Journal of Materials Processing Technol-ogy,2007,(186):120-124.
[10]彭伟,杨雪春,杨国泰.高强度板U形件冲压成形的回弹仿真研究[J].锻压技术,2008,33(1):34-38.
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