| DP600双相钢电阻点焊热电瞬态过程数值分析 |
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| 引用本文： | 张鹏,谢俊,王元勋,陈建桥.DP600双相钢电阻点焊热电瞬态过程数值分析[J].华中科技大学学报(自然科学版),2011(1):58-61. |
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| 作者姓名： | 张鹏 谢俊 王元勋 陈建桥 |
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| 作者单位： | 华中科技大学土木工程与力学学院; |
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| 基金项目： | 国家自然科学基金资助项目(11072083) |
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| 摘 要： | 应用ANSYS软件分析了交变电流加载下DP600点焊的预压和热电瞬态过程,数值模拟揭示了双相钢点焊过程中电场的变化规律和熔融区的形成过程,并通过实验验证了模拟结果的准确性.结果表明:工件间的接触是工件表面的部分接触,接触面的初始导电区域大于锥形电极端面;接触面上各点的电流密度和电压分布随时间变化呈正弦周期波动,最大的电流密度和电压出现在电极边缘处;熔融区的径向增长呈波动性且增长速度大于轴向增长速度;当电流过大时熔融区的模拟值明显大于实验值.
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| 关 键 词： | DP600双相钢 电阻点焊 预压接触 电流密度 电压 熔融区 |
Numerical analysis of the thermo-electric transient process during DP600 dual-phase steel resistance spot welding |
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| Zhang Peng Xie Jun Wang Yuanxun Chen Jianqiao.Numerical analysis of the thermo-electric transient process during DP600 dual-phase steel resistance spot welding[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(1):58-61. |
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| Authors: | Zhang Peng Xie Jun Wang Yuanxun Chen Jianqiao |
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| Institution: | Zhang Peng Xie Jun Wang Yuanxun Chen Jianqiao(School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Both the prepressing contact and thermo-electric transient processes of the resistance spot welding of DP600 dual-phase steel under alternative current(AC) load were analyzed by ANSYS software.The electric field laws and the fusion zone formation process were discovered through numerical simulation.And the accuracy of the simulation results was verified through experimental methods.The results show that,the area of the initial conductive region was apparently bigger than that of the electrode tip,the curren... |
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| Keywords: | DP600 dual-phase steel resistance spot welding per-crimp contacts current density voltage fusion zone |
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