封头内高压胀形工艺有限元模拟  

Finite Element Simulation of Head Internal High-pressure Forming Process

作　　者：任志斌[1] 周存龙[1] 周研[1] 

机构地区：[1]太原科技大学材料科学与工程学院,太原030024

出　　处：《太原科技大学学报》2015年第6期460-464,共5页Journal of Taiyuan University of Science and Technology

摘　　要：针对目前国内凸形封头生产工艺中出现的制造难的问题,本文提出了一种"封头内高压对胀成形"的新工艺。通过分析金属封闭型腔内压力胀形机理,利用自编制MATLAB程序生成DEFORM有限元仿真控制命令流,将金属胀形过程的几何参数及温度场逐步导出,结合实际气体状态方程式计算,得到受气体压强作用下金属的内部载荷值,导入有限元模型中替换原有载荷值后启动有限元运算模块,进行下一步模拟计算。实现模型在非定向变载荷作用下的成形仿真,并得出主要参数的关系曲线,为气压胀形理论在封头成形领域的可行性提供一定参考。A new technology for internal high pressure bulging of head is proposed to solve difficult problem of man- ufacturing convex head in domestic production. The metal closed type interior pressure bulging process was given, the self-compiled MATLAB program was used to generate control command stream in DEFORM finite element sim- ulation. Gradually metal geometric parameters and temperature field were exported, internal load was calculated by the equation of state of real gas under gas pressure action metal, finite element model was imported to replace the o- riginal load and finite element calculation module started next simulation calculation. Simulation model was formed to achieve non-directional loads and draw the curve of main parameters, which could provide reference for pneumat- ic bulging theory about feasibility in the field of hHead forming.

关 键 词：封头 内高压 对胀成形 刚塑性有限元 

分 类 号：TG306[金属学及工艺—金属压力加工]