Numerical simulation of bending deformation induced by multi-seam welding of a steel-pipe structure

Wu, Chunbiao; Lee, Chang‐Hoon; Kim, Jae-Woong

doi:10.1007/s12206-020-0433-8

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…Subsequently, the elastic-plastic mechanical analysis with large deformation theory is carried out using obtained temperature history as an input load for the calculation of stressstrain field and corresponding welding distortion. The details of the 3D TEP-FEM numerical simulation procedure of L-seam, C-seam, and multi-seam pipe welding were also described in the previous research 17) . Finally, the distribution of inherent strain for typical welded joints was obtained by using the established TEP-FEM models.…”

Section: Thermal Elastic-plastic Fem Simulationmentioning

confidence: 99%

Welding Distortion Prediction for Multi-Seam Welded Pipe Structures using Equivalent Thermal Strain Method

Wang

Kim

2021

Journal of Welding and Joining

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Distortion prediction of a welded structure is an important way to improve work efficiency and ensure product quality during the fabrication process. Recently, the widely used approaches for evaluating residual deformation include the thermo-elastic-plastic finite element method (TEP-FEM) and the inherent strain method (ISM). The former can accurately simulate the entire welding process with excessive computational time, whereas the latter has great potential in the fast prediction of residual distortion in complex welded components. In this study, an equivalent thermal strain method based on inherent strain theory was proposed to predict residual deformation of the multi-seam welded pipe structures. Moreover, a full 3D TEP-FEM model was also developed to estimate the distributions of inherent strain in longitudinal (L-seam) and circumferential (C-seam) welds. To validate the accuracy of the proposed ISM, the welding distortion predicted by the proposed ISM is compared with the experimental data and TEP-FEM simulation results. It is discovered that the proposed ISM can be used to accurately predict welding-induced deformation in multi-seam welded pipe structures. Furthermore, compared with TEP-FEM simulation, the significant advantage of this approach is that the computing efficiency can be increased by about 50 times.

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Section: Thermal Elastic-plastic Fem Simulationmentioning

confidence: 99%

Welding Distortion Prediction for Multi-Seam Welded Pipe Structures using Equivalent Thermal Strain Method

Wang

Kim

2021

Journal of Welding and Joining

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“…The numerically predicted hardness, microstructure and phase composition confirmed good correlation with the results of experimental measurements. Wu et al [19] numerically and experimentally investigated the bending deformations caused by MAG welding on the example of butt-welded pipes. Liu et al [20] used a combined shell/3D model in research of a temperature field and residual stresses.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Measurement of Residual Stresses in a Thick-Walled Buried-Arc Welded Pipe Structure

Perić

Garašić

Gubeljak

et al. 2022

Metals

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In this study, a numerical simulation of a single pass welding of two thick-walled pipes with the buried-arc method was performed in order to determine the residual stresses caused by welding. The numerical simulation procedure in the thermal analysis was performed by the element birth and death method while the structural analysis was performed simultaneously, without the application of the element birth and death technique in order to reduce the duration of the numerical simulation. The simulation results were validated by experimental residual stress measurements on the outside surfaces of the welded model using the X-ray diffraction technique. A good agreement between the results of the numerical simulation and experimental measurements was confirmed.

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“…Here, heat input was applied by using the prescribed thermal boundary conditions instead of applying the heat flux to simulate the moving of the electrode in order to speed up the calculation process. Furthermore, Wu et al [31] and Zhao et al [32] investigated the residual stresses in MAG butt-welded pipes, while the residual stresses and deformations in MAG welded lap joints are studied by Lin et al [33].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Investigation of Temperature and Residual Stress Distributions in a Circular Patch Welded Structure

Perić¹,

Nižetić

Tonković

et al. 2020

Energies

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In this study, we performed a numerical simulation and experimental measurements on a steel circular patch welded structure to investigate the temperature and residual stress field distributions caused by the application of buried-arc welding technology. The temperature histories during the welding and subsequent cooling process were recorded for two locations, with the thermocouples mounted inside the plate close to the weld bead. On the upper surface of the welded model, the temperature-time changes during the cooling process were monitored using an infrared camera. The numerically calculated temperature values correlated well with the experimentally measured ones, while the maximum deviation of the measured and calculated temperatures was within 9%. Based on the numerical result analysis regarding circumferential and radial stresses after the completion of the welding process, it is concluded that both stresses are primarily tensile within the circular disk. Outside the disk, the circumferential stresses turn from tensile to compressive, while on the other hand the radial stresses disappear towards the ends of the plate.

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Numerical simulation of bending deformation induced by multi-seam welding of a steel-pipe structure

Cited by 10 publications

References 16 publications

Welding Distortion Prediction for Multi-Seam Welded Pipe Structures using Equivalent Thermal Strain Method

Welding Distortion Prediction for Multi-Seam Welded Pipe Structures using Equivalent Thermal Strain Method

Numerical Simulation and Experimental Measurement of Residual Stresses in a Thick-Walled Buried-Arc Welded Pipe Structure

Numerical Simulation and Experimental Investigation of Temperature and Residual Stress Distributions in a Circular Patch Welded Structure

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