摘要
以U型零件为研究对象,依据中心组合试验设计方法进行试验,对U型零件冲压进行数值模拟,获得不同工艺参数下的回弹量。基于响应面法获得不同工艺参数影响下U型件的回弹量的响应模型,研究了摩擦系数、压边力以及板料厚度对DP800先进高强钢冲压回弹量的影响规律,并对各个回弹参数的响应模型进行了优化。多目标优化结果表明:对于DP800先进高强钢,采用NUMISHEET'93标准考题的U型件模型,在摩擦系数为0.2、压边力为100 k N左右、板料厚度为2 mm时,或者摩擦系数为0.1、压边力为20 k N、板料厚度为2 mm时,可以达到最小回弹量。
Taking the U-shaped part as object and according to central composite experimental design method, U-shaped part stamping process was simulated, and its springback data under different stamping technological parameters were studied. Based on the response sur- face method, the springback response models of DP800 U-shaped part under different parameters were established, the influences of fric- tion coefficient, blank holder force and sheet thickness on springback of DP800 during stamping were researched, and the response mod- els of the springback parameters were optimized. The multi-objective optimization results show that the minimum springback can be ob- tained by the U-shaped model of NUMISHEET93 standard examination questions for DP800 with the friction coefficient 0. 2, the blank holder force 100 kN, sheet thickness 2 mm, or friction coefficient 0. 1, blank holder force 20 kN, sheet thickness 2 mm.
出处
《锻压技术》
CAS
CSCD
北大核心
2015年第4期40-44,共5页
Forging & Stamping Technology
关键词
DP800
回弹
数值模拟
响应面法
优化
DP800 steel
springback
numerical simulation
response surface method
optimization
