Weld joint preparation is an essential factor that affects the performance of the weldment. The effect of joint design under multi-pass shielded metal arc welding of AISI 304 stainless steel is investigated. A thermo-elastic-plastic finite element formulation is developed. The temperature field and residual stresses are validated using experimental data. Root opening and root face are the two prominent factors in the weld joint preparations. The formulation is applied to analyze the effect of these parameters on temperature formation and residual stress. The analysis demonstrates that the increase in the root opening, increases the peak temperature values thereby increases the maximum values of tensile and compressive residual stress. It is observed that the width of the tensile zone increases and that of the compressive zone decreases proportionately with the increase in root opening. It is found that the effect of the root face is not so prominent in comparison to the root opening.

焊缝准备是影响焊件性能的重要因素。研究了接头设计在AISI 304不锈钢多道屏蔽金属电弧焊中的作用。开发了一种热弹塑性有限元公式。使用实验数据验证了温度场和残余应力。根部开口和根部表面是焊接接头准备工作中的两个重要因素。该配方用于分析这些参数对温度形成和残余应力的影响。分析表明，根部开口的增加会增加峰值温度值，从而增加拉伸残余残余应力和压缩残余残余应力的最大值。观察到，随着根部开口的增加，拉伸区域的宽度增加，而压缩区域的宽度成比例地减小。已经发现，与根部开口相比，根部表面的效果不是那么突出。