In this work, simulation has been carried out for multipass Gas tungsten Arc Welding of SS316L and their effects were studied for thermal, and residual stresses and compared with experimental results. The sequentially coupled thermo-mechanical, transient thermal and static structural analysis was modelled using ANSYS with relevant Ansys Parametric Design Language coding. Infrared thermography camera was used to obtain the real time temperatures during the welding. The effect of temperatures and the induced residual stresses of the weldment is measured with X-Ray diffraction technique. Tensile residual stresses have been identified at fusion zone and compressive stresses at heat affected zone. Pass wise temperature measurements were taken from analysis and experiment the agreement with 7.24%. The agreement of measured and analysed residual stress had an agreement with 16.66%.

在这项工作中，对SS316L的多道次钨极气体保护弧焊进行了仿真，并研究了它们对热应力和残余应力的影响，并与实验结果进行了比较。使用ANSYS和相关的Ansys Parametric Design Language编码对顺序耦合的热力，瞬态热和静态结构分析进行建模。红外热像仪用于获得焊接过程中的实时温度。温度的影响和焊接件产生的残余应力用X射线衍射技术测量。在熔合区确定了拉伸残余应力，在热影响区确定了压缩应力。从分析中获得通过温度测量值，并以7.24％的一致性进行实验。