Simulation Software of MAG Arc Welding for Butt Joint
Simulation Software of MAG Arc Welding for Butt Joint
复制标题
MAG弧焊对接仿真软件
DOI：
10.2207/qjjws.23.71
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Ohji
中科院分区：
文献类型：
--
作者：
Takeshi Yamamoto;Y. Yamazaki;Y. Tsuji;F. Miyasaka;T. Ohji
为了确定数学模型是否可以用于MAG（金属活性气体）电弧焊的数值模拟，进行了可行性研究。本文建立了对接接头的三维非稳态热模型。采用基于热流方程的有限微分模型，对母材内部瞬态温度分布进行数值分析，估算熔池大小，并计算出考虑重力、表面张力和电弧压力平衡的熔池理论形态。为了验证模型分析的有效性，将计算结果与MAG焊接的实验结果进行了比较。实验结果与计算结果吻合良好。根据该软件，可以很容易地估计出一组工艺参数在工件中的焊缝轮廓和温度历史。为了全面预测MAG弧焊现象，将建立的焊接过程模型与变形模型联系起来。因此，在制造环境中，软件作为工程工具是有用的可能性是存在的。
A feasibility study has been conducted to determine whether mathematical models can be used for the numerical simulation of MAG (Metal Active Gas) arc welding. In the present work, a three-dimensional (3-D), non-stationary thermal model for butt joint is developed. The transient temperature distribution in the base metal is numerically analyzed to estimate the molten pool size using a finite differential model based on the heat flow equation, and the theoretical configuration of the molten pool is calculated, taking account of the balance of gravity, surface tension and arc pressure. To evaluate the validity of the model analysis, the calculated results are compared with experimental results for MAG welding. Good correspondence is demonstrated between experiment and calculation. According to the software, the weld profile and temperature history in the work-piece for a set of process parameters is easily estimated. To predict the MAG arc welding phenomenon comprehensively, the developed welding process model has been linked to a deformation model. Accordingly, there is the possibility that the software is useful as an engineering tool in a manufacturing environment.