| 大型异型材拉弯成形有限元模拟技术研究 |
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| 引用本文： | 万敏,洪振军,李卫东,阮红,袁争荣,许崇高.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). |
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| 作者姓名： | 万敏 洪振军 李卫东 阮红 袁争荣 许崇高 |
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| 作者单位： | 1. 北京航空航天大学机械工程及自动化学院,北京,100083
2. 成都飞机工业(集团)公司,四川成都,610092 |
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| 摘 要： | 异型材几何截面非对称特征与拉弯围转成形特点构成了型材拉弯有限元模拟过程中的许多特殊的问题,如易发生较大的扭转变形,出现贴模错误,初始接触错误,加载轨迹长,动态效应明显,刚体发生变形,计算量过大等.本文针对某飞机上大型复杂异型截面型材零件拉弯过程有限元模拟技术进行了研究,通过对加引导面模具设计、网格划分、加载轨迹设计、夹钳及毛料圆角处理等关键技术的研究,解决了型材拉弯成形模拟中的上述问题,应用有限元分析软件ABAQUS,实现了大型异型材的拉弯成形数值模拟.
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| 关 键 词： | 型材 拉弯 数值模拟 |
FEM simulation technology on stretch bending of long profile with complex section |
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| WAN Min,HONG Zhen-jun,LI Wei-dong,RUAN Hong,YUAN Zheng-rong,XU Chong-gao.FEM simulation technology on stretch bending of long profile with complex section[J].Forging & Stamping Technology,2008,33(5). |
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| Authors: | WAN Min HONG Zhen-jun LI Wei-dong RUAN Hong YUAN Zheng-rong XU Chong-gao |
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| Affiliation: | WAN Min1,HONG Zhen-jun1,LI Wei-dong1,RUAN Hong1,YUAN Zheng-rong2,XU Chong-gao2(1.School of Mechanical Engineering , Automation,Beihang University,Beijing 100083,China,2.Chengdu Air Craft Industrial(Group) Co.,Ltd.,Chengdu 610092,China) |
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| Abstract: | The asymmetry section and the specificity of stretch bending process lead to many special problems in the FEM simulation of extrusion wrap forming.For example,large torsion,initial overclosure of profile,long loading path,dynamic effect,distortion of rigid body,long computing time,etc.The FEM simulation technology on stretch bending of large profile with complex section was researched.Problems above were solved by adding pilot surface on tool,majorized mesh and loading path,proper treated jaw,and knuckle.Th... |
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| Keywords: | profile stretch bending numerical simulation |
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