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6061铝合金管件磁脉冲冲击介质胀形变形规律研究

Research on Deformation Law of 6061 Aluminum Alloy Tube Formed by Medium Bulging Process With Magnetic Pulse Impacting
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摘要 以6061铝合金管件为研究对象,利用ANSYS仿真软件,建立了电磁场、变形场有限元模型,针对管件胀形高度变化、壁厚减薄、应力应变分布、变形均匀性等变形规律进行了分析研究。研究发现,磁脉冲冲击介质胀形可有效改善传统管件磁脉冲胀形存在的严重壁厚减薄、轴向变形不均匀性等问题,使变形轮廓增大,均匀变形长度增加。成形中管件胀形高度与放电能量呈线性关系。介质高度一定时,随着放电能量增加,变形均匀性变化较小。介质高度随管件变形量增加而增加,合适的介质高度可提高管件的变形均匀性、改善圆角处贴模和避免介质失效。 6061 aluminum alloy tube was taken as the research object,the simulation software ANSYS was used to establish the finite element model of electromagnetic field and deformation field.The deformation laws of height variation,thickness reduction,stress and strain distribution,deformation uniformity in tube bulging process were analyzed.The results show that the serious thickness reduction and inhomogeneity of axial deformation are improved by medium bulging process with magnetic pulse impacting,and deformation contours enlarges and uniform deformation length increases compared with traditional magnetic pulse bulging.The bulging height has a linear relationship with the discharge energy.Changes of deformation uniformity is small with discharge energy at constant medium height.Medium height increases with the increase of tube deformation.Appropriate medium height can enhance the uniformity of tube,improve the sticking die at round corner and avoid medium failure.
作者 徐俊瑞 李毅 王宇阳 赵雨东 王元丰 汪强昆 闫亮明 XU Junrui;LI Yi;WANG Yuyang;ZHAO Yudong;WANG Yuanfeng;WANG Qiangkun;YAN Liangming(School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Engineering Research Center of Advanced Light Metal Materials Development and Processing Protection,Ministry of Education,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of Light Metal Materials,Inner Mongolia University of Technology,Hohhot 010051,China)
出处 《航空制造技术》 CSCD 北大核心 2022年第10期68-74,共7页 Aeronautical Manufacturing Technology
基金 内蒙古自然科学基金(2021MS05004) 内蒙古高等学校青年科技英才(NJYT22087)。
关键词 6061铝合金 磁脉冲管件成形 数值模拟 放电能量 介质高度 6061 aluminum alloy Magnetic pulse forming of tube Numerical simulation Discharge energy Medium height
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