摘要
采用有限元数值模拟技术,对6005A铝合金空心型材压弯过程进行系统研究,定量研究了型材壁厚、模具辊轮直径、辊轮间距和型材高宽比对型材压弯成形质量的影响。采用中心复合法进行了试验设计,并通过灵敏度分析得到了各工艺参数对型材压弯回弹的影响程度的大小。结果表明,在所选取的工艺参数中,型材壁厚对成形最大减薄率、最小减薄率和截面畸变的影响最大;型材高宽比对型材回弹影响最大。采用二阶响应面建立了各变量与各成形性能之间的定量关系。研究结果可为铝合金空心型材压弯成形质量的控制提供参考。
Finite element simulation was conducted to systematically study the wall thick-ness variation,cross-section distortion and springback during press bending of 6005A alumi-num alloy hollow profiles.The influence of profile wall thickness,die roller diameter,roller spacing,and profile aspect ratio on the bending quality was quantitatively studied.The cen-tral composite method was used for experimental design,and the influence degree of various process parameters on the springback of profile bending was obtained through sensitivity anal-ysis.The results show that among the selected process parameters,the wall thickness of pro-file has the greatest impact on the maximum thinning rate,minimum thinning rate,and cross-section distortion during bending.The aspect ratio of profile has the greatest impact on the springback.The quantitative relationship between each variable and each forming per-formance was established using second-order response surface methodology.The research re-sults can provide certain guiding significance for controlling the forming quality of hollow alu-minum profile in bending.
作者
易杰
李兆昕
朱圣博
王熙民
刘志文
YI Jie;LI Zhaoxin;ZHU Shengbo;WANG Ximin;LIU Zhiwen(Hunan Precision Parts CNC Processing Technology Digital Engineering Technology Research Center,Changsha 410208,China;Hunan Vocational and Technical College of Industry,Changsha 410208,China;Intelligent flexible machining technology for complex thin-walled precision parts Hunan Engineering Research Center,Changsha 410208,China;School of Mechanical Engineering,University of South China,Hengyang 410082,China)
出处
《轻合金加工技术》
CAS
2024年第9期53-61,共9页
Light Alloy Fabrication Technology
基金
国家自然科学基金项目(52005244)
湖南省自然科学基金项目(2023JJ60193,2021JJ30573)
湖南省大学生创新创业训练项目(2022X10555005、D202305201416254546)。
关键词
6005A铝合金空心型材
压弯
成形质量
数值模拟
试验设计法
6005A aluminum alloy hollow profile
bending
forming quality
numerical simulation
experimental design method
