基于响应面法的汽车发电机磁极锻造成形工艺多目标优化  

Multi-objective optimization on automobile generator pole in forging process based on response surface method

作　　者：郝用兴[1] 王超峰[1] 张红艺[1] 冯梅玲 

机构地区：[1]华北水利水电大学机械学院,河南郑州450045

出　　处：《锻压技术》2016年第12期1-7,共7页Forging & Stamping Technology

基　　金：国家留学基金委地方合作项目(201308410091);2015年度河南省基础与前沿技术研究项目(152300410215)

摘　　要：针对汽车发电机磁极锻造成形过程中出现的填充不满、成形载荷过大、局部应力过大等缺陷,采用Deform软件对磁极锻造成形过程进行数值模拟分析。以降低未填充率、成形载荷和局部应力最大值为优化目标,以坯料直径、锻件温度、挤压速度和摩擦条件为优化变量,通过4因素5水平的中心复合试验,采用响应面法进行建模分析,最终得到3个优化目标的二阶响应面模型;对所建立的模型进行方差分析,通过模拟试验验证了该模型的准确性和可靠性。实际生产表明:采用优化工艺参数组合可以得到成形缺陷较小的磁极锻件,锻件成形精度可以达到±0.5 mm;成形载荷和局部应力最大值得到降低;提高了模具寿命及生产效率。For the defects of under filling,heavy forming load and high peak value of local stress in the forging process of automobile generator pole,the generator pole forging process was numerically simulated by the software of Deform. For the optimal objective to reduce unfilled rate,forming load and peak value of local stress,and the optimal variables with blank diameter,forging temperature,extruding speed and friction condition,the second order response surface model（ RSM） of three optimal objectives was set up by central composite experiment design（ CCD） with four factors and five levels,and the analysis of variance（ ANOVA） of RSM was carried out. Furthermore,the variance analysis was performed on the established model,and its reliability and accuracy were verified by simulated tests. The practice production indicates that generator poles with less forming defects can be obtained by combining the optimized process parameters,and a high forging accuracy of 0. 5 mm can be achieved. Therefore,the peak values of forging load and local stress are deduced,the die life is prolonged and the production efficiency is improved.

关 键 词：发电机磁极 DEFORM-3D 锻造成形 锻造缺陷 中心复合试验 多目标优化 响应面法 

分 类 号：U463.631[机械工程—车辆工程] TG316[交通运输工程—载运工具运用工程]