“…There are many influential process parameters on the weld quality of laser transmission joining, such as welding speed, laser power, spot diameter and so on. In the present, test methods are widely used in this area to research the interaction effect of process parameters on the joint quality [5][6][7][8], Experimental studies often take a long time and a large number of funds, whereas through finite element simulation all the process parameters can be taken into account to achieve optimum parameters, thus reducing test cost, shortening test cycles and improving efficiency. Many scholars have already researched finite element simulation of laser transmission joining process, such as finite element model of laser transmission joining process [9],temperature field distribution under conditions of different process parameters [10,11]and the residual stress distribution [12].…”