EFFECT OF EDGE PREPARATION ON RESIDUAL STRESS OF WELDING IN DISSIMILAR JOINTS

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CHARKHI MEHRAN; AKBARI DAVOOD

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:7 Page(s): 307-315

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Title

EFFECT OF EDGE PREPARATION ON RESIDUAL STRESS OF WELDING IN DISSIMILAR JOINTS

Author(s)

CHARKHI MEHRAN | AKBARI DAVOOD | Issue Writer Certificate

Keywords

RESIDUAL STRESSESQ2

GROOVE SHAPEQ1

ROOT OPENING DISTANCEQ1

Abstract

In this paper, thermo-mechanical behavior of the welding process was analyzed to determine the effect of edge preparation on the residual stress magnitude and distribution in dissimilar joints. By using a verified finite element model, an efficient user subroutine was developed to consider the effects of phase transformation. In order to verify the model, experimental data for similar and dissimilar joints, obtained by deep hole drilling method, were utilized. Good agreement was observed between the finite element and experimental data. The results indicated that the developed computational method is an effective tool to predict the residual stress of dissimilar weld joints. The present finite element model was developed in a butt-welded pipe to consider the effect of pipe wall-thickness, GROOVE SHAPE and ROOT OPENING DISTANCE. It was observed that the pipe wall-thickness has important influences on the distribution and magnitude of residual stress. Moreover, By increasing the pipe thickness in the dissimilar butt-welded pipes, tensile axial RESIDUAL STRESSES on the inner surface of the dissimilar joint decreased on the stainless steel side, but only a small variation was observed on the carbon steel side.The compressive axial RESIDUAL STRESSES on the inner surface and the tensile axial RESIDUAL STRESSES on the outer surface increased by increasing the pipe wall thickness, especially on the carbon steel side.Increasing the weld GROOVE SHAPE and ROOT OPENING DISTANCE leads to higher compressive axial stresses on the inner surface and higher tensile axial stresses on the outer surface, only on the carbon steel side.

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APA: Copy

CHARKHI, MEHRAN, & AKBARI, DAVOOD. (2017). EFFECT OF EDGE PREPARATION ON RESIDUAL STRESS OF WELDING IN DISSIMILAR JOINTS. MODARES MECHANICAL ENGINEERING, 17(7 ), 307-315. SID. https://sid.ir/paper/179362/en

Vancouver: Copy

CHARKHI MEHRAN, AKBARI DAVOOD. EFFECT OF EDGE PREPARATION ON RESIDUAL STRESS OF WELDING IN DISSIMILAR JOINTS. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(7 ):307-315. Available from: https://sid.ir/paper/179362/en

IEEE: Copy

MEHRAN CHARKHI, and DAVOOD AKBARI, “EFFECT OF EDGE PREPARATION ON RESIDUAL STRESS OF WELDING IN DISSIMILAR JOINTS,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 7 , pp. 307–315, 2017, [Online]. Available: https://sid.ir/paper/179362/en

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