矩形盒拉深时变压边力的数值模拟  

Numerical Simulation of Variable Blank-holder Force in Box Deep Drawing Process

作　　者：王元勋[1] 王书恒[1] 沈为[1] 祝洪川[2] 李荣峰[2] 

机构地区：[1]华中科技大学,武汉430074 [2]武汉钢铁公司技术中心,武汉430080

出　　处：《中国机械工程》2007年第10期1226-1229,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(10272050)

摘　　要：建立了矩形盒拉深成形的三维仿真分析模型,并将其与实验结果进行了对比验证。在概述压边力在生产过程中的用途和意义的基础上,讨论了变压边力对薄板拉深成形过程的影响,利用DY-NAFORM模拟软件研究了随拉深时间和压边圈位置变化的压边力对拉深成形质量的影响,得到了相应的数值模拟结果,为实际生产过程中合理调节压边力的大小提供了理论依据。研究表明,采用变压边力控制技术可以显著改善矩形盒的成形性能。The 3D simulation model of box deep drawing was presented and validated with the homologous experiment. On the basis of the sketch of use and significance of blank-holder force in production, the effects on the formability of box deep drawing process were investigated with the DYNAFORM,which was applied to the variable blank-holder force（VBHF） changing with the deep drawing time and the position of the VBHF. The numerical simulation results indicate that the variable blank-holder force can improve the formability of box deep drawing process.

关 键 词：板料拉深成形 变压边力 数值模拟 成形极限图 

分 类 号：TH137.52[机械工程—机械制造及自动化]