基于响应面法的Y型管内高压成形加载路径优化  

Loading path optimization for internal high-pressure forming of Y-shaped tube based on response surface method

作　　者：徐佳俊 徐雪峰[1] 范玉斌 王磊[1] XU Jia-jun;XU Xue-feng;FAN Yu-bin;WANG Lei(School of Aviation Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《塑性工程学报》2022年第6期67-75,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51975267);国家科技重大专项(J2019-VII-0014-0154)。

摘　　要：针对Y型管内高压成形过程中支管壁厚分布不均匀、起皱的问题,采用响应面法和有限元法对Y型管内高压成形的加载路径进行了优化。将内压、左右推头进给量、中间推头后退量和摩擦因数设为参数变量,以Y型管的减薄率和增厚率作为目标函数;在获得的最优加载路径的基础上,讨论并确定了各参数对目标函数的影响及其相互作用。结果表明,预测值、模拟值和试验值之间具有显著的一致性,并且优化结果与试验结果相吻合。通过优化加载路径,有效提高了Y型管的内高压成形性能,支管成形良好,无起皱和破裂现象发生。Aiming at the problems of uneven wall thickness distribution and wrinkling of branch tube during internal high-pressure forming of Y-shaped tube,the loading path of Y-shaped tube internal high-pressure forming was optimized by using response surface method and finite element method.The internal pressure,feeding amount of left and right pusher,retreat amount of middle pusher and friction factor were set as the parameter variables,and the thinning rate and thickening rate of Y-shaped tube were used as the objective functions;on the basis of the obtained optimal loading path,the influence of each parameter on the objective function and its interaction were discussed and determined.The results show that there is a significant consistency between the predicted value,simulated value and test value,and the optimization results are consistent with the test results.By optimizing the loading path,the internal high-pressure forming performance of Y-shaped tube is effectively improved,and the branch tube is well formed without wrinkling and cracking phenomena.

关 键 词：内高压成形 响应面法 Y型管 加载路径 

分 类 号：TG394[金属学及工艺—金属压力加工]