| CO2气体保护焊温度场的三维数值模拟与分析 |
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| 引用本文： | 张银霞,乔向南,王栋,覃寿同.CO2气体保护焊温度场的三维数值模拟与分析[J].郑州大学学报(工学版),2012,33(4):41-45. |
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| 作者姓名： | 张银霞 乔向南 王栋 覃寿同 |
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| 作者单位： | 1. 郑州大学机械工程学院,河南郑州450001;卫华集团有限公司,河南新乡453401
2. 郑州大学机械工程学院,河南郑州,450001 |
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| 摘 要： | 采用商用ANSYS软件的二次开发语言,选用适宜于CO2气体保护焊的双椭球热源模型,建立了Y型坡口的两块钢板对接多层多道焊模型,分别采用三种不同"单元生死"技术对其温度场分布规律进行数值模拟及对比分析,验证了模拟过程中采用逐步、逐层激活焊缝单元的"单元生死"技术的必要性.得到了模型在各时间点的温度场分布,绘制了典型位置的热循环曲线,据此可掌握和预测实际焊接过程以及焊接之后焊件的组织、性能以及残余应力的变化情况.
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| 关 键 词： | CO2气体保护焊 双椭球热源 单元生死 温度场 |
Three-dimensional Numerical Simulation and Research of CO2 Arc Welding Temperature Field |
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| ZHANG Yin-xia
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Qiao Xiang-nan
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WANG Dong
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Qin Shou-tong.Three-dimensional Numerical Simulation and Research of CO2 Arc Welding Temperature Field[J].Journal of Zhengzhou University: Eng Sci,2012,33(4):41-45. |
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| Authors: | ZHANG Yin-xia Qiao Xiang-nan WANG Dong Qin Shou-tong |
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| Affiliation: | 1(1.School of Mechanical Engineering,Zhengzhou University,Zhengzhou 450001,China;2.Weihua Group,Xinxiang 453400,China) |
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| Abstract: | With the developing language of ANSYS software and the using of the double-ellipsoid heat source model,a model of two steel plate that connected by Y groove multi-layer and multi-pass CO2 arc welding seam is created.Three different kinds of element birth and death technology are used separately in the model.After the comparison of three different numerical simulation results,the correctness of the element birth and death technology which activates the welding material step by step is validated.The temperature field distribution regularities of the welding at various time points of welding progress are analyzed.The cycling curves of typical spots on different place of the model are studied.Based on the results,the component’s tissue,properties and residual stress at different position of the model can be estimated. |
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| Keywords: | CO2 arc welding double-ellipsoid heat source mode element birth and death temperature field |
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