实际拉深筋与等效拉深筋的对比研究  

Comparative study of real drawbead and equivalent drawbead

作　　者：马荣国[1] 邱晓刚[2] 廖丕博[1] 

机构地区：[1]昆明理工大学机电学院,云南昆明650093 [2]攀枝花钢铁研究院,四川攀枝花617000

出　　处：《锻压技术》2008年第3期36-38,71,共4页Forging & Stamping Technology

摘　　要：采用动力显式有限元软件eta/Dynaform对等效拉深筋模型和实际拉深筋模型进行有限元计算,讨论了初始压边力和虚拟冲压速度对板料通过拉深筋后变形行为的影响,对比分析了有限元计算结果;通过实际测试对模拟计算结果进行了验证。研究表明:应用等效拉深筋模型不能精确的模拟板料通过实际拉深筋时的变形行为,实际拉深筋模型受初始压边力的影响比等效拉深筋模型要大;同时得到了虚拟冲压速度合理的取值范围。The dynamic explicit finite element software eta/Dynaform was used to simulate the real and equivalent drawbead models, analyse the influence of the blank hold force （BHF） and virtual velocity on blank＇s deformation behaviour after passing through drawbead, and make the comparison of the FE simuliation results. The simulation results were validated by experiments. The study shows that the equivalent drawbead model can not precisely simulate the blank＇s behaviour when it passes the real drawbead. When applied the real drawbead model, the influence of BHF was bigger than equivalent drawbead and the proper range of virtual velocity was obtained at the same time.

关 键 词：有限元分析 实际拉深筋 等效拉深筋 

分 类 号：TG386[金属学及工艺—金属压力加工]