摘要
针对波纹管液压成形后回弹易导致波高偏离设计尺寸的问题,运用ABAQUS有限元软件对波纹管液压成形及回弹过程进行了数值模拟,基于Box-Behnken试验设计,建立了成形参数与波高之间的二次多项式预测方程。建立了波高控制模型,在成形参数可控性分析的基础上,给出了改变模片厚度和内压力的波高控制方法。在以上分析的基础上,通过数值迭代求解得到了控制波高的参数组合并进行了试验验证。结果表明,试验样件的波高与设计值的误差为0.31%,由此验证了控制方案的可行性,成功实现了对波纹管波高的精确控制,为此类零件的精确液压成形提供了参考。
Aiming at the problem that the convolution height of bellows is easy to deviate from the design size due to springback after hy-droforming,the numerical simulation of hydroforming and springback process of bellows was carried out by the finite element software ABAQUS.Based on the Box-Behnken test design,the quadratic polynomial prediction equation between forming parameters and convolu-tion height was established.The convolution height control model was established,the control method of convolution height,which is changing die thickness and internal pressure was given based on the controllability analysis of forming parameters.Based on the above a-nalysis,the combination of parameters for convolution height control was obtained by numerical iterative solution and the test verification was carried out.The results show that the error between the convolution height of test sample and the design value is 0.31%,thus the fea-sibility of the control scheme was verified and the accurate control of convolution height of bellows was successfully achieved,which pro-vides the reference for accurate hydroforming of such parts.
作者
刘健
李亮
刘静
李兰云
LIU Jian;LI Liang;LIU Jing;LI Lan-yun(Key Laboratory of Materials Processing Engineering,School of Material Science and Engineering,Xi′an Shiyou University,Xi′an 710065,China;Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;Shenyang AEROSUN-FUTAI Expansion Joint Co.,Ltd.,Shenyang 110141,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2022年第9期80-87,共8页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(51875456)
陕西省教育厅科研计划项目(20JC029)
汽车零部件先进制造技术教育部重点试验室开放课题(2018KLMT03)
西安石油大学研究生创新与实践项目(YCS20112022)。
关键词
多层高温合金波纹管
液压胀形
波高控制
数值模拟
multilayer high-temperature alloy bellows
hydroforming
convolution height control
numerical simulation
