物理学报2012，Vol.61Issue(2)：23-29,7.
旁路耦合电弧焊温度场模拟及验证
Numerical simulation of temperature field of DE-GMAW and its comparison with experimental measurements
摘要
Abstract
Based on the features of DE-GMAW（double electrode gas metal arc welding）,a new hybrid heat-source model that is suited for the DE-GMAW is established.Using this heat-source model,the temperature fields of DE-GMAW wtih different welding parameters are simulated.According to the simulation results with different welding parameters,in this article we analyze the influence of welding parameters on the heat input of base metal in DE-GMAW.To verify the rationality of the hybrid heat-source model of DE-GMAW, the simulation results of the temperature field are compared with the results obtained from the experiment that is carried out under the same condition.The research results indicate that under the same total current,the heat input of base metal decreases gradually with the increase of by-pass current.Moreover,the closer to the welding line the greater the decrease rate of the heat input of base metal is.The study and the comparison of the thermal cycle curve of measured points show that the simulation results are in good agreement with the experimental results.These results indicate that the temperature field model is accurate and the hybrid heat-source model is reasonable.关键词
旁路耦合电弧焊/复合热源模型/焊接温度场/母材热输入Key words
DE-GMAW/hybrid heat-source model/welding temperature field/heat input of base metal分类
矿业与冶金引用本文复制引用
石玗,韩日宏,黄健康,樊丁..旁路耦合电弧焊温度场模拟及验证[J].物理学报,2012,61(2):23-29,7.基金项目
国家自然科学基金 （）
兰州理工大学优秀青年教师培养计划 （）
教育部科学技术研究重点项目（批准号：210229）资助的课题~~ （）
