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        Effect of joint design on residual stresses in AISI-304 stainless steel weldment -a numerical study

        Yogeshwar Jasra,Sorabh Singhal,Ravindra K. Saxena 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.5

        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.

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