| 铝合金电阻点焊中点蚀环形成的数值分析 |
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| 引用本文： | 米晨雷,吴志生,刘翠荣,申志刚.铝合金电阻点焊中点蚀环形成的数值分析[J].焊接技术,2011,40(3):15-18. |
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| 作者姓名： | 米晨雷 吴志生 刘翠荣 申志刚 |
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| 作者单位： | 太原科技大学材料科学与工程学院,山西,太原,030024 |
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| 基金项目： | 山西省自然科学基金，省留学基金，太原市人才明星专项 |
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| 摘 要： | 为减少电极点蚀,提高电极寿命,建立了铝合金电阻点焊过程数值模拟的有限元分析模型,利用大型软件ANSYS Workbench考察焊接过程中电极表面温度、电流密度、电极压力的分布情况.结果表明:在电极与工件接触区的边缘处存在电极压力和电流密度集中区,并且此处存在明显的高温现象.由此推断,电极表面上点蚀环的形成主要是由于电极...
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| 关 键 词： | 铝合金 电阻点焊 电极点蚀 温度分布 应力集中 电流边缘效应 有限元分析模型 |
Numerical analysis of electrode pitting in resistance spot welding process of aluminum alloys |
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| MI Chen-lei,WU Zhi-sheng,LIU Cui-rong,SHEN Zhi-gang.Numerical analysis of electrode pitting in resistance spot welding process of aluminum alloys[J].Welding Technology,2011,40(3):15-18. |
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| Authors: | MI Chen-lei WU Zhi-sheng LIU Cui-rong SHEN Zhi-gang |
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| Affiliation: | MI Chen-lei,WU Zhi-sheng,LIU Cui-rong,SHEN Zhi-gang(College of Material Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi pro.,China)P15-18 |
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| Abstract: | Experiments indicated that the initial pitting was in a ring form with a radius pretty close to the radius of the contact region.To prevent pitting from occurrence and improve electrode life,a finite element analysis model was constructed to simulate the resistance spot welding process of aluminum alloys.The temperature of electrode tip surface,the current density and the distribution of stress were simulated by means of ANSYS workbench.The results showed that the electrode stress,the current density and th... |
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| Keywords: | aluminum alloys resistance spot welding electrode pitting temperature distribution stress concentration current edge effect finite element analysis model |
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