| 旋转电弧窄间隙焊温度场和侧壁熔深的数值模拟 |
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| 引用本文： | 黎文航,胡婷,刘川,王加友,王淼. 旋转电弧窄间隙焊温度场和侧壁熔深的数值模拟[J]. 焊接学报, 2015, 36(8): 5-8 |
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| 作者姓名： | 黎文航 胡婷 刘川 王加友 王淼 |
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| 作者单位： | 1.江苏科技大学材料科学与工程学院, 镇江 212003 |
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| 基金项目： | 国家自然科学基金资助项目(51005107,51475218);"高档数控机床与基础制造装备"科技重大专项资助项目(2012ZX04008031);江苏省青蓝工程科技创新团队、优秀青年骨干教师资助项目 |
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| 摘 要： | 针对旋转电弧窄间隙MAG焊焊缝成形研究需要,采用Ansys软件对旋转电弧窄间隙MAG焊接温度场进行数值模拟,研究焊缝成形的影响因素.考虑旋转电弧窄间隙MAG焊特点,实现热源模型旋转加载和旋转电弧窄间隙焊接三维温度场数值计算,模拟温度场结果与试验焊缝形貌吻合良好.为进一步提高计算效率,根据热源等效和旋转电弧热源分布特点,提出了一种类似马鞍形圆环的等效热源,侧壁熔深模拟结果与实际较符合,且计算效率大为提高.研究结果为进一步的熔深控制和焊接变形研究奠定基础.
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| 关 键 词： | 旋转电弧窄间隙焊 焊缝成形 数值模拟 等效热源 Ansys |
| 收稿时间： | 2014-04-25 |
Rotating arc narrow gap welding numerical simulation of temperature field and side wall penetration |
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| LI Wenhang,HU Ting,LIU Chuan,WANG Jiayou and WANG Miao. Rotating arc narrow gap welding numerical simulation of temperature field and side wall penetration[J]. Transactions of The China Welding Institution, 2015, 36(8): 5-8 |
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| Authors: | LI Wenhang HU Ting LIU Chuan WANG Jiayou WANG Miao |
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| Affiliation: | 1.School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China2.Nanjing Pride Technology Co., Ltd., Nanjing 211106, China |
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| Abstract: | To meet the reserach demand of weld formation in narrow gap MAG welding, the welding temperature field was numerically simulated by Ansys to study the affecting factors. Considering the characteristics of this welding method, rotating load of the heat source model was realized and three-dimensional temperature field numerical calculation was obtained. The numerical simulation results of weld shape and the experimental results of actual welding were in good agreement. In order to further improve the computational efficiency, a similar saddle ring equivalent heat source was proposed according to heat equivalent and characteristic of heat source distribution. The simulation results of sidewall penetration agreed well with the practical measurement, and the calculation speed was greatly improved. The results were helpful for the further research on penetration control and welding deformation. |
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| Keywords: | rotating arc narrow gap welding weld formation numerical simulation equivalent heat source |
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