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    张昭

    • 教授     博士生导师   硕士生导师
    • 主要任职:Professor in Process Mechanics
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:力学与航空航天学院
    • 学科:制造工艺力学. 工程力学. 计算力学
    • 办公地点:综合实验1号楼619
    • 联系方式:0411-84708432
    • 电子邮箱:zhangz@dlut.edu.cn

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    The 3D simulation of friction stir welding process

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    论文类型:会议论文

    第一作者:Zhang, Z

    合写作者:Chen, JT,Zhang, HW

    发表时间:2005-01-01

    收录刊物:CPCI-S

    页面范围:1338-1342

    关键字:friction stir welding; finite element method; residual stress; material flow; equivalent plastic strain

    摘要:This paper presents a 3D numerical model based on arbitrary Lagrangian-Eulerian(ALE) and adaptive remeshing techniques to study the mechanism of friction stir welding. Results indicate that the material flow on the advancing side and the flow on the retreating side are different. The material on the retreating side never rotates around the pin. But the material on the advancing font side of the weld forms the fluidized bed around the pin and then sloughs off in the wake. The material in front of the pin moves upwards, then is forced to rotate around the pin. Behind the pin, the material moves downwards. It is the true reason to make the FSW process continue successfully. It seems that there exists a swirl of material flow on the advancing side. The residual stress distribution is a double-feature curve. It is also shown that there exists a good correlation between the equivalent plastic strain distribution and the distribution of the microstructure zones in the weld.