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基于有限元法的螺旋定子外高压胀形优化
英文标题:Optimization on external high-pressure bulging of spiral stator based on finite element method
作者:王树强 陈昊雷 乔金梦 陈钊 周游 
单位:沈阳化工大学 蓝星(北京)化工机械有限公司 
关键词:分步胀形 螺旋定子 外高压胀形 响应面模型 减薄率 
分类号:TG394
出版年,卷(期):页码:2022,47(8):95-101
摘要:

 为了解决螺旋定子类零件在外高压胀形工序中易出现的破裂、起皱等问题,结合此类零件具有的连续光滑、截面等面积的特点,提出了针对螺旋定子外高压胀形中的工艺参数的优化方法。建立了以最大减薄率为优化目标,胀形压力、螺旋导程、摩擦因数为优化因素的响应面模型,并通过响应面分析结合有限元仿真的方法获得了外高压胀形螺旋定子的最优交互优化参数组合:胀形压力为193.121 MPa、螺旋导程为810 mm、摩擦因数为0.149。使用优化的工艺参数进行胀形实验,获得了壁厚均匀、最大减薄率较小的螺旋定子零件,通过超声波测厚仪对所得零件进行壁厚测量,得到壁厚实验值与仿真值的误差均小于2%,验证了该优化方法的可行性。

 Spiral stator parts are prone to cracking and wrinkling during the external high-pressure bulging process, and such parts have the characteristics of continuous smoothness and equal cross section area. Therefore, a optimization method of the process parameters in the external high-pressure bulging of spiral stator was proposed, and a response surface model was established with the maximum thinning rate as the optimization target and bulging pressure, spiral lead and friction factor as the optimization factors. Then, the optimal interactive optimization parameters combination of external high-pressure bulging for spiral stator was obtained with the bulging pressure of 193.121 MPa, the spiral lead of 810 mm, and the friction factor of 0.149 by the response surface analysis combined with finite element simulation. Furthermore, the bulging experiment was carried out by using the optimized process parameters, and the spiral stator parts with uniform wall thickness and small maximum thinning rate were obtained. The results of wall thickness measurement for the obtained parts by means of an ultrasonic thickness gauge show that the errors between experiment and simulation values are less than 2%, which verifies the feasibility of the optimization method.

基金项目:
辽宁省自然科学基金资助项目(20170540722)
作者简介:
作者简介:王树强(1978-),男,博士,副教授,E-mail:wsqwsq_2004@126.com;通信作者:陈昊雷(1997-),男,硕士研究生,E-mail:15905275133@163.com
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