Mechanical constraint effect on residual stress and distortion in T-fillet welds by three-dimensional finite element analysis

Aalami-Aleagha, M.E.; Eslampanah, A H

doi:10.1177/0954405412466781

Cited by 10 publications

(3 citation statements)

References 13 publications

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“…Welding is one of the various manufacturing processes that produce high detrimental tensile residual stress (TRS) on metallic components, 1,2 which have adverse effects on their fatigue strength, corrosion resistance, and leads to cracking as well as distortion during the subsequent manufacturing processes. 3 Relaxing these stresses is necessary to avoid failure acceleration when external tensile loads are applied.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of post-weld shot peening using combined discrete and finite element methods (DEM-FEM)

Ahmad

Gong

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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The numerical simulation of the post-weld shot peening (SP) process was performed to analyze the influence of various SP parameters on the final induced compressive residual stress (CRS). Firstly, the welding process was simulated based on the Finite Element Method (FEM) using ABAQUS CAE and FORTRAN user subroutine code, from which the initial welding-induced tensile residual stresses (TRS) were obtained. The FE model was validated using the results obtained from the TIG welding of the aluminum 2219 alloy (AA 2219) plate. Then, the post-weld SP process was numerically simulated using the combined discrete and finite element methods (DEM-FEM). The computed CRS from the simulation was compared with the experimentally measured outcome to validate the DEM-FEM model, and good agreement was observed from the compared results. Finally, the post-weld SP model was applied to extensively analyze the influence of the various SP parameters related to the peening media and target material on the final CRS.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of post-weld shot peening using combined discrete and finite element methods (DEM-FEM)

Ahmad

Gong

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Residual stress fields strongly depend upon a few influential welding conditions, which can alter the distribution of stresses across the welded joints. 6–9 Leggatt 10 mentioned influential factors affecting the residual stress profiles, which include material properties, residual stresses present prior to the welding operation due to the fabrication processes, weld geometries, restraint conditions, welding process being applied, and post welding employed thermal or mechanical operations. Mousavi and Miresmaeili 11 investigated the intensity of residual stresses present in different weld groove geometries.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of through-thickness residual stresses and microstructure in SA516 Gr. 70 steel welds

Taraphdar

Mahapatra

Pradhan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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The critical working condition of nuclear power plant equipment necessitates meticulous determination of the welding process and parameters. In this work, some major influential factors of welding were investigated to observe their effects on the through-thickness residual stress distribution in multipass pressure vessel steel welds. In this regard, experiments were conducted to find the characteristics of residual stresses dispersed in SA516 Grade 70 steel welds of different groove geometries with distinct welding conditions. Three-dimensional finite element models of the weldments were developed considering a moving heat source with temperature-dependent material properties to simulate the welding thermal cycles and corresponding residual stress fields. Effects of weld groove geometry, number of weld passes, external constraints, and preheating on the through-thickness residual stress fields were studied. Additional attention was given to the evaluation of the heterogeneous microstructure and microhardness across the weld cross-section associated with their weld thermal history. Finally, the evolution of the through-thickness residual stresses attributed to subsequent weld passes was elaborated.

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“…19,20 Therefore, proper control and mitigation of residual stress in the hybrid laser/arc welding process are needed. So far, a number of approaches have been proposed to mitigate the residual stress concentration induced in the welding process, such as applying an additional heat or cooling source, 21,22 exerting the mechanical constraint, 23 optimizing the welding path, 24 and applying post-weld vibration. 25 A detailed review of residual stress control in the welding has been done by Coules.…”

Section: Introductionmentioning

confidence: 99%

Measurement of surface residual stresses and testing mechanical properties of high-strength steel butt joints obtained by hybrid laser/gas metal arc welding

Kong

Kovacevic

2013

The Journal of Strain Analysis for Engineering Design

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Hybrid laser/gas metal arc welding was applied to join the thick high-strength steel in square butt joints with narrow gaps. An X-ray diffraction technique was used to measure the surface residual stress distribution of high-strength steel by a hybrid laser/gas metal arc welding in a butt joint configuration. The influence of welding parameters, including welding speed and wire feeding rate, on the residual stress distribution and mechanical properties of the hybrid weld was experimentally studied. The obtained results show that there exist high compressive transverse and longitudinal residual stresses along the centerline of the weld. However, high tensile transverse and longitudinal stresses are located in the nearby heat-affected zone. An increase in the welding speed definitely decreases the residual stress concentration. A good weld quality of high-strength steel butt welds without cracking or defects can be achieved by a hybrid laser/gas metal arc welding technique. KeywordsLaser welding, gas metal arc welding, hybrid laser/gas metal arc welding, residual stress, X-ray diffraction technique Date

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Mechanical constraint effect on residual stress and distortion in T-fillet welds by three-dimensional finite element analysis

Cited by 10 publications

References 13 publications

Numerical simulation of post-weld shot peening using combined discrete and finite element methods (DEM-FEM)

Numerical simulation of post-weld shot peening using combined discrete and finite element methods (DEM-FEM)

Evaluation of through-thickness residual stresses and microstructure in SA516 Gr. 70 steel welds

Measurement of surface residual stresses and testing mechanical properties of high-strength steel butt joints obtained by hybrid laser/gas metal arc welding

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