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Numerical simulation research on stamping-necking process of barrel-type workpiece
Author(s): WU Zhenting, WANG Yanmin
Pages: 58-
61
Year: 2009
Issue:
5
Journal: Forging & Stamping Technology
Keyword: 筒形零件; 缩口工艺; 冲压; 数值模拟;
Abstract: 应用有限元分析软件中的显式动力学求解器模拟筒形零件缩口成形工艺过程中应力、应变和位移流向的分布云图,分析了工件成形时的塑性变形特点及其对成形质量的影响关系.研究表明:筒形件冲压缩口成形工艺主要失效形式是缩径区的裂纹、定径区的起皱和传力区部分的失稳等;工件失效的主要原因是塑性变形区材料流动速度不均匀导致的应力集中;冲压缩口力随着摩擦系数和模具锥角的增大而增大,但是会随着模具型腔内圆角半径的增大而减小...
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