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摘要：
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应用弹塑性大变形有限元法对国际冷锻组织2008标准考题"薄壁管旋转锻造"进行全过程模拟,分析冷态高频旋转锻造的受力情况和变形特点。探讨不同摩擦条件对旋锻后锻件尺寸的影响,摩擦因子取0.3时,模拟结果与物理试验结果吻合较好;由于旋转锻造的局部非连续增量成形方式,坯料的变形按"点-线-面"递增且呈均匀周向分布,成形力呈阶梯状上升,趋稳后小幅振荡前进;摩擦对旋转锻造总成形力几乎没有影响。
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A large deformation elastic-plastic finite element model was developed to simulate the rotary swaging process of thin-walled tube, a benchmark from International Cold Forging Group (ICFG) 2008. Based on the simulation results, the effects of cold rotary swaging with high-frequency pulse stroking on the distributions of different field variables such as stress and strain were clarified; the different friction contributions were discussed as well. A comparison between the calculated results and experimental data was demonstrated. The result of simulation with friction coefficient of 0.3 is the closest; with the discontinuous local incremental forming process, the deformation of the tube increases by "point-line-surface" and uniformly distributes on circumference; the deformation force step rises until reaches maximum, then it goes forward in small oscillation. And according to the research, friction is not so related to the deformation force.
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作者简介：
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参考文献：
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