7022铝合金搅拌摩擦焊接全过程温度场的数值模拟
Numerical Simulation of Temperature Field in the Full Friction Stir Welding Process for 7022 Aluminum Alloy
摘 要
基于对搅拌摩擦焊接过程的划分以及相对应的热输入模型, 建立了焊接全过程的温度场有限元分析模型; 通过求解得到了搅拌头旋转压入阶段、初始焊接阶段、准稳态焊接阶段和焊接结束4个阶段的温度场分布, 并进行了试验验证。结果表明: 模拟得到的温度结果和通过热电偶法测得的温度结果比较吻合。
搅拌摩擦焊
温度场
数值模拟
7022 aluminum alloy
friction stir welding
temperature field
numerical simulation
Abstract
FEM analysis model of temperature field was built up based on the division of friction stir welding process and the corresponding heat input model. Through solving the established model, temperature field distributions of these four stages including the tool inserting welding, the initial welding, the stable welding and the end-up welding stage were obtained. And verification of FEM model was carried out by thermal couple test. Results show the simulation results of temperature were accorded with the experimental results basically.
中图分类号 TG402
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金资助项目(51175255); 江苏省研究生创新基金资助项目(CX09B-073Z)
收稿日期 2011/11/29
修改稿日期 2012/3/20
网络出版日期
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备注董学伟(1986-), 男, 安徽巢湖人, 硕士研究生。
引用该论文: DONG Xue-wei,LI Xiang-feng,ZUO Dun-wen,WANG Hong-feng,WANG Ji-sheng,DONG Chun-lin,LI Guang. Numerical Simulation of Temperature Field in the Full Friction Stir Welding Process for 7022 Aluminum Alloy[J]. Materials for mechancial engineering, 2012, 36(10): 92～96
董学伟,黎向锋,左敦稳,汪洪峰,王吉胜,董春林,李光. 7022铝合金搅拌摩擦焊接全过程温度场的数值模拟[J]. 机械工程材料, 2012, 36(10): 92～96
被引情况:
【1】邹青峰,钱炜,安丽,刘钢,赵晟,毕庆贞, "搅拌针形状对2A14铝合金搅拌摩擦焊接头组织和拉伸性能的影响",机械工程材料 39, 37-41(2015)
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参考文献
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【2】张武, 柯黎明, 邢丽. 搅拌摩擦焊焊缝横截面塑性材料迁移行为分析[J].材料工程,2008(2)62-66.
【3】李宝华, 柯黎明, 邢丽, 等. 搅拌摩擦焊工艺参数对LY铝合金焊缝金属流动形态的影响[J].机械工程材料, 2009,33(1):55-58.
【4】辜纯民, 邓卫华, 杨成刚, 等. 搅拌摩擦焊工艺参数对LY12铝合金接头组织和力学性能的影响[J].机械工程材料, 2008,32(6):22-24.
【5】SUTTON M A, YANG B, REYNOLDS A P, et al.Micro-structural studies of friction stir welds in 2024-T3 aluminum[J]. Materials Science and Engineering: A, 2002, 323(1/2): 160-166.
【6】王卫兵, 王玉,高大路, 等.铝合金搅拌摩擦焊接起始阶段温度场分析[J].热加工工艺,2008,37(21):107-113.
【7】SONG M, KOVACEVIC R. Thermal modeling of friction stir welding in a moving coordinate system and its validation[J].International Journal of Machine Tools & Manufacture,2003,43:605-615.
【8】CHAO Y J, QI X, TANG W. Heat transfer in friction stir welding-experimental and numerical studies[J].Journal of Manufacturing Science and Engineering,2003,125:138-145.
【9】BUFFA G, HUA J, SHIVPURI R, et al. A continuum based fem model for friction stir welding model development[J].Materials Science and Engineering:A,2006,419(1/2):389-396.
【10】汪洪峰. 7022铝合金搅拌摩擦连接工艺及后续铣削变形研究[D].南京: 南京航空航天大学, 2011.
【11】KHANDKAR M Z H, KHAN J A, REYNOLDS A P. Predicting residual thermal stresses in friction stir welded metals[J].Journal of Materials Processing Technology,2006,174:195-203.
【12】应力霞, 王黎钦, 陈观慈, 等. 3D激光熔覆陶瓷-金属复合涂层温度场的有限元仿真与计算[J].金属热处理,2009,29(7):24-28.
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