Thermal Stresses in a Submerged-Arc Welded Joint Considering Phase Transformations

Andersson, B.

doi:10.1115/1.3443504

Cited by 130 publications

(63 citation statements)

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“…The temperature dependent yield stress for S355 is approximated by using Eq. (4) (see Section 6) while Young's modulus is obtained from [23]. The thermal expansion coefficient for all three steel grades is obtained through JMat Pro software.…”

Section: Mechanical Analysismentioning

confidence: 99%

Influence of thermo-mechanical material properties of different steel grades on welding residual stresses and angular distortion

Bhatti

Barsoum

Murakawa

et al. 2015

Materials & Design (1980-2015)

134

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Section: Mechanical Analysismentioning

confidence: 99%

Influence of thermo-mechanical material properties of different steel grades on welding residual stresses and angular distortion

Bhatti

Barsoum

Murakawa

et al. 2015

Materials & Design (1980-2015)

134

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“…His model provided an effective and reliable solution for calculation of the thermal history in weld. Andersson [25] developed a 2D FE approach to study the distributions of residual stress in the top and bottom surfaces of the parent plate near the weld during a butt SAW process. The phase transformation during cooling was taken into account employing a volumetric dilatation technique, which was proposed to be of primary importance to the residual stress analysis of weldment.…”

Section: Introductionmentioning

confidence: 99%

Investigation of temperature and residual stresses field of submerged arc welding by finite element method and experiments

Nezamdost

Esfahani

Hashemi

et al. 2016

Int J Adv Manuf Technol

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This article reports on a numerical and experimental investigation to understand and improve computer methods in application of the Goldak model for predicting thermal distribution in submerged arc welding (SAW) of APIX65 pipeline steel. Accurate prediction of the thermal cycle and residual stresses will enable control of the fusion zone geometry, microstructure, and mechanical properties of the SAW joint. In this study, a new Goldak heat source distribution model for SAW is presented first. Both 2D and 3D finite element models are developed using the solution of heat transfer equations in ABAQUS Standard implicit. The obtained results proved that the 2D axi-symmetric model can be effectively employed to simulate the thermal cycles and the welding residual stresses for the test steel. As compared to the 3D analysis, the 2D model significantly reduced the time and cost of the FE computation. The numerical accuracy of the predicted fusion zone geometry is compared to the experimentally obtained values for bead-on-plate welds. The predictions given by the present model were found to be in good agreement with experimental measurements.

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“…Convection heat transfer coefficient in central line was zero due to the symmetry of the line and was considered to be 15 (W.m 2 )/c in other surfaces. Ambient temperature was assumed 18 o C [8,9,13,14]. In this study, a constant heat was applied in each pass which was proportional to welding time and the position of welded elements.…”

Section: Thermal Analysismentioning

confidence: 99%

Transverse and Longitudinal Stress Analysis in Reinforced Welded Oil Branched Pipes

2018

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Abstract.Welding process results in the non-uniform distribution of heat. Combined with thermal strain, plastic deformation and welding-induced distortion, it causes important problems such as failure. This study models welding process in a 12×16 split tee junction using finite element. This junction is a reinforcing branch used in the hot taping of oil pipe line. The model is studied in 3D state. This zone, i.e. heat affected zone (HAZ) is of high importance due to the existence of a severe temperature gradient and stress in the vicinity of HAZ. This study analyses single pass butt welding with a cooling time of 2700 seconds. In order to apply boundary conditions to the model, the studied structure should be in Free State according to practical procedure. The main aim of this simulation is to analyse Longitudinal and transverse residual stresses originated from co-directional and opposite-directional welding. This joint is formed of two semicircles welded to each other as linear single pass welding. Two welders simultaneously welded both sides of the pipe.

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Thermal Stresses in a Submerged-Arc Welded Joint Considering Phase Transformations

Cited by 130 publications

References 0 publications

Influence of thermo-mechanical material properties of different steel grades on welding residual stresses and angular distortion

Influence of thermo-mechanical material properties of different steel grades on welding residual stresses and angular distortion

Investigation of temperature and residual stresses field of submerged arc welding by finite element method and experiments

Transverse and Longitudinal Stress Analysis in Reinforced Welded Oil Branched Pipes

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