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摘要：
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通过对Y型辊模拉拔异型材的变形过程进行三维数值模拟,用云图的形式直观地给出了金属流动的规律及变形情况。得到了拉拔过程中工件变形的应力、应变场等,并分析了变形程度和摩擦系数对拉拔力的影响。将有限元数值模拟方法引入异型棒线材的辊模拉拔中,为缩短辊模设计周期提供了新的方法。
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The three-dimensional numerical simulation is applied for the roller die drawn of Y model to deformed course of drawing shaped,the metal floating law and deformed condition is given with the form of cloud atlas.The strain and the stress site in course are achieved,and the influence of deformation and coefficient of friction on drawing force is analysed.The radial load which is hard to measure is obtained through simulation in practice,and a new method to shorten the roller mould design period is offered.
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基金项目：
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作者简介：
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参考文献：
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[1]Eienkiewicz O C,Godbole P N.Flow of plastic and viscoplasticsolids with special reference to eztrusion and forming processes[J].Int.J.Num.Meth.,1974,(8):3.
[2]郑宝龙,朱为昌,刘希和.辊模拉拔运动学分析[J].金属制品,1995,22(5):10 13.
[3]杨慎华,等.辊式模拉拔工艺力能参数的计算与分析[J].农业机械学报,1996,27(3):148 152.
[4]马怀宪.金属塑性加工学—挤压、拉拔与管材冷轧[M].北京:冶金工业出版社,1997.
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