南京航空航天大学学报2025，Vol.57Issue(1)：92-99,8.DOI:10.16356/j.1005-2615.2025.01.009
贮箱筒体多节筒段与长筒段搅拌摩擦焊接残余应力差异性研究
Research on Difference of Residual Stress in Friction Stir Welding Between Multi-segment and Long-Segment Cylindrial Shell
摘要
Abstract
The model of 2219 aluminum alloy storage tank under two manufacturing modes of rocket storage tank,multi-segment and long segment,is established by finite element simulation.The accuracy of the model is verified by the test plate friction stir welding experiment,and the difference of residual stress between the two is compared.The results show that the stress concentration occurs at the weld in both the multi-segment and the long segment,and the stress concentration at the end of the last weld in the multi-segment is particularly serious.The stress concentration is not obvious at the junction of the longitudinal and girth welds in the multi-segment and the long segment.After the completion of the second girth weld,the stress in the multi-segment is slightly relieved,decreasing by 5.51%,and that in the long segment decreasing by 3.83%.The stress distribution in the parts of the cylinder without weld is more uniform.The longitudinal and circumferential weld residual stress distributions are similar between the multi-segment and the long segment,but the stress concentration area of the long segment is small,the maximum residual tensile stress and the maximum residual compressive stress are reduced by 25.73%and 27.38%.关键词
2219铝合金/火箭贮箱筒段/有限元仿真/搅拌摩擦焊/残余应力Key words
2219 aluminum alloy/rocket tank barrel section/finite element simulation/friction stir welding/residual stress分类
矿业与冶金引用本文复制引用
赵耀邦,陈波,王建峰,历吴恺,李峻臣,林才渊,占小红..贮箱筒体多节筒段与长筒段搅拌摩擦焊接残余应力差异性研究[J].南京航空航天大学学报,2025,57(1):92-99,8.基金项目
基础科研计划项目(JCKY2023605C010) （JCKY2023605C010）
上海市优秀学术/技术带头人计划项目(22XD1344000). （22XD1344000）
