板料冲裁过程中材料流动与断面形成的有限元模拟  

Finite element simulation of material flow and section formation in sheet metal blanking

作　　者：樊曙天[1] 张玉新[1] 林立峰[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《模具工业》2009年第2期36-39,共4页Die & Mould Industry

摘　　要：运用有限元方法对精冲过程中不同压边力和反顶力对材料流动特性的影响进行分析,研究表明,较大的压边力和反顶力可以显著抑制精冲过程中材料涡流的形成。继而分析了断面光洁面随着压边力和反顶力增加而提高的原因,提出有限元分析方法可以有效地预测精密冲裁零件的断面质量。The material flow was investigated punch forces by the finite element method with respect to various blank holder forces and reverse （FEM） The results indicate that large blank holder forces and reverse punch forces can significantly suppress the formation of swirling flow in materials during fine blanking process. The reason why the section quality grows with increase of blank holder force and reverse punch force was analyzed. The FEM simulation method is useful for predicting the section surface features of fine blanking products.

关 键 词：精密冲裁 材料流动 有限元分析 断面质量 

分 类 号：TG386[金属学及工艺—金属压力加工]