角接热源模型校核研究

Study on Checking of Angle Joint Heat Source Model

在角接过程中,为了使模拟的热源模型与实际热源相符,需对模拟角接热源模型进行校核。本文以普通碳素结构钢为例,基于改进双椭球热源模型对其角接接头进行数值模拟,采用合适热源数学模型参数确定焊接熔池的精确形貌,并获得改进双椭球热源模型的敏感性参数在MAG焊条件下熔宽、熔深的线性回归结果。研究结果表明:普通碳素结构钢角接接头可根据金相熔池形貌的熔宽、熔深相应地校核焊接热源模型的相关参数,并可为更准确的模拟结果提供参考。

In order to make the simulated heat source model conform to the actual heat source, the simulation model needs to be checked. Taking ordinary carbon structural steel as example, and based on the improved double ellipsoid heat source model, the angle joints of ordinary carbon structural steel were numerically simulated. The suitable heat source model parameters were used to determine the welding molten pool accurate profile, and the linear regression results of the weld width and penetration depth in the melting electrode active gas protection arc welding （metal active gas are welding MAG） under the condition of improved sensitivity parameters of the double ellipsoid heat source model were gotten. The results show that the corresponding angle joint heat source model parameters of ordinary carbon structural steel can be checked according to the weld width and the depth of the weld pool, thus the reference for the more accurate simulation results is provided.