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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:工程力学系
    • 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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    Numerical studies on effect of axial pressure in friction stir welding

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    论文类型:期刊论文

    第一作者:Zhang, Z.

    通讯作者:Zhang, Z (reprint author), Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China.

    合写作者:Zhang, H. W.

    发表时间:2007-05-01

    发表刊物:SCIENCE AND TECHNOLOGY OF WELDING AND JOINING

    收录刊物:SCIE

    卷号:12

    期号:3

    页面范围:226-248

    ISSN号:1362-1718

    关键字:friction stir welding; finite element method; axial pressure; temperature distribution; material flow

    摘要:A fully coupled thermomechanical model of friction stir welding ( FSW) is developed in the current research to investigate the effect of the axial pressure on the material behaviours and temperature distributions in the FSW process. Results indicate that the axial pressure is a key factor for the successful FSW. Insufficient or excessive axial pressure leads to the failure of FSW. The material flows at the advancing side and the retreating side are different, which can be fitted well with the experimental observations. The material flows in the direction of the thickness become more obvious when the axial pressure is increased. The maximum temperature and plastic contribution to the temperature field in FSW can be both increased with the increase in the axial pressure.