摘要
盒形件具有非回转对称形状特征,其成形性能受多种因素的影响。其中压边力的影响尤其明显,且易于控制和调节。采用数值模拟研究了恒压边力和变压边力(随行程变化)下盒形件的拉深成形性能,并得出了相应的结果。并将加载变压边力的实际拉深实验结果与数值模拟结果进行对比。研究表明,施加递增型和∧型变压边力能够有效地控制金属的流动,提高板材的成形性能;实际拉深实验壁厚变化趋势与数值模拟一致,误差较小,验证了数值模拟的可靠性。
The formability of rectangular box parts with non-rotationally symmetric characteristic is affected by many factors.The effect of blank holder force is particularly evident,and it is easy to control and adjust.The deep drawing formability of rectangular box parts was studied by numerical simulation under conditions of variable blank holder force（VBHF） and constant blank holder force respectively,and the corresponding numerical simulation results were obtained.The actual deep drawing experiments with load VBHF were compared with the results of numerical simulation.Studies show that loading the incremental type and ∧ type of VBHF can control the flow of metal material effectively,and the formability of sheet metal is improved.The changing trend of wall thickness in the experiment is the same as that of numerical simulation.Due to a small error,the reliability of numerical simulation is verified.
出处
《锻压技术》
CAS
CSCD
北大核心
2014年第11期20-24,共5页
Forging & Stamping Technology
基金
2012年江苏大学工业中心大学创新实践基金资助项目资助
关键词
变压边力
拉深成形
盒形件
数值模拟
variable blank holder force
deep drawing
rectangular box
numerical simulation
