| 铝合金双丝焊应力场的数值模拟 |
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| 引用本文： | 孟庆国,方洪渊,徐文立,姬书得.铝合金双丝焊应力场的数值模拟[J].焊接学报,2005,26(8):43-48. |
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| 作者姓名： | 孟庆国 方洪渊 徐文立 姬书得 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 基金项目： | 国家“863”高科技资助项目（3002AA305402） |
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| 摘 要： | 通过对双丝焊电弧形态及熔滴过渡蹄径进行分析．发现双丝焊时前丝和后丝的电弧均向两丝中间偏转的现象．以此为基础．对双椭球形热源模型进行修正，提出了可用于双丝焊温度场计算的热源模型，并经过实际温度采样验证了该模型的准确性。以此为基础．分析了2219铝合金双丝焊条件下纵向驶横向应力的演变规律。
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| 关 键 词： | 数值模拟 双丝焊 铝合金 |
| 文章编号： | 0253-360X（2005）08-43-04 |
| 收稿时间： | 08 10 2004 12:00AM |
| 修稿时间： | 2004-08-10 |
Numerical simulation of stress field for twin wire welding of al-alloy |
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| MENG Qing-guo,FANG Hong-yuan,XU Wen-li and JI Shu-de.Numerical simulation of stress field for twin wire welding of al-alloy[J].Transactions of The China Welding Institution,2005,26(8):43-48. |
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| Authors: | MENG Qing-guo FANG Hong-yuan XU Wen-li and JI Shu-de |
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| Affiliation: | State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China and State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | By analyzing the shape of twin wire welding arc and the track of droplets transfer, the phenomena that both fore arc and back arc deflect to the middle of the two arcs was found in the twin wire welding. Based on this, the double ellipsoid heat source model was modified, and a heat source model to calculate the twin wire welding temperature field was put forward. This model was testified by actual experiment of temperature sampling. Then, the evolution regularities of longitudinal and transverse stress for 2219 Al-alloy were investigated under the condition of twin wire welding. |
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| Keywords: | numerical simulation twin wire welding Al alloy |
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