Welding-induced stresses and distortion in high-strength steel T-joints: Numerical and experimental study

Ghafouri, Mehran; Ahola, Antti; Ahn, Joseph; Björk, Timo

doi:10.1016/j.jcsr.2021.107088

Cited by 39 publications

(17 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A sequential 3D coupling FE model of AA6061-T6 plate-to-sleeve welded joints was developed based on ABAQUS Software and Python subroutine. [29][30][31] The geometrical dimension and welding pass arrangement were exactly the same as the actual welded joint. The thermal analysis was first performed, and then the temperature history of nodes was mapped to the mechanical analysis model.…”

Section: Numerical Modelingmentioning

confidence: 99%

“…A rate-independent plastic model with temperature-dependent mechanical properties, isotropic hardening law, and the von Mises criterion was used to describe the material plastic behavior. 7,14,31 The thermal strain behavior was described using a temperature-dependent thermal expansion coefficient. The calculation formula for von Mises stress is as follows: where σ 1 , σ 2 , and σ 3 are the principal stresses, respectively.…”

Section: Numerical Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Numerical simulation of welding deformation and residual stress in aluminum alloy plate-to-sleeve welded joints

Zhao

You

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

The plate-to-sleeve welded joint is employed in the aluminum alloy spatial structure. The welding deformation and residual stress determine the dimensional accuracy and even increase the failure risk. Based on ABAQUS software and the coordinate transformation method, a finite element model with the arc weaving was developed to investigate the temperature field, welding deformation, and residual stress of an AA6061-T6 plate-to-sleeve welded joint with 8-pass. The metal inert gas welding experiment was performed with the corresponding joint, and the welding deformation and residual stresses were measured to verify the numerical results. The results show that the thermal cycle of the weaving weld and its vicinity have multiple peaks, and the time interval between two adjacent peaks is one weaving period. The deformation pattern of the joint is angular deformation. The maximum deformation is observed in the weld toe of the top surface. The longitudinal residual stress in the weld and its vicinity is high tensile stress, and that in the upper part of the sleeve is mainly compressive stress. The transverse residual stress in the weld and its vicinity of the top surface is low tensile stress, and that in the bottom surface is compressive stress. Furthermore, the evolution of the welding deformation and residual stresses attributed to subsequent weld passes was elaborated, which provides a reference for developing control schemes.

show abstract

Section: Numerical Modelingmentioning

confidence: 99%

Section: Numerical Modelingmentioning

confidence: 99%

Numerical simulation of welding deformation and residual stress in aluminum alloy plate-to-sleeve welded joints

Zhao

You

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

show abstract

“…Over the last few decades, studies have developed several methods of planning and controlling this distortion [ 15 , 16 ]. In general, control of welding distortion and residual stresses can be accomplished using mechanical effects, thermal effects, or a combination of the two techniques and can be performed either during welding or after [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Grey Relational Analysis and Grey Prediction Model (1, 6) Approach for Analyzing the Electrode Distance and Mechanical Properties of Tandem MIG Welding Distortion

et al. 2023

View full text Add to dashboard Cite

The tandem metal inert gas (MIG) process uses two wires that are continuously fed through a special welding torch and disbursed to form a single molten pool. Within the contact tip of the modern approach, the wires are electrically insulated from one another. This study identified the effect of welding electrode spacing on the distortion of AA5052 aluminum plates and different mechanical properties including hardness and thermal cycle using grey relational analysis. Plate distortion was subsequently predicted using the grey prediction model GM (1, 6). This research used a pair of 400 mm × 75 mm × 5 mm of AA5052 plates and electrode distances of 18, 27, and 36 mm. The welding current, voltage, welding speed, and argon flow rate were 130 A, 23 V, 7 mm/s, and 17 L/min, respectively. The temperature was measured using a type-K thermocouple at 10, 20, 30, and 40 mm from the center of the weld bead. The smallest distortion at an electrode distance of 27 mm was 1.4 mm. At an electrode distance of 27 mm, the plate may reach a proper peak temperature where the amount of heat input and dissipation rate are similar to those for electrode distances of 18 mm and 36 mm. The highest relative VHN of 57 was found in the BM, while the lowest, 46, was found in the WM, showing good agreement with their respective grain sizes. Six parameters were designed using grey relational analysis (GRA) and subsequently employed in the grey prediction model GM (1, 6). Process evaluation results show that predictions for welding distortions are consistent with actual results, thus, the GM (1, 6) model can be used as a predictive model for welding distortions of 5052 aluminum plates.

show abstract

“…The subsequent rapid cooling of molten materials leads to material shrinkage in the weld zone and its immediate vicinity. It is generally known that this phenomenon leads to the appearance of undesirable effects such as changes in the crystal structure, changes of mechanical properties in the weld zone and the occurrence of permanent plastic deformations and residual stresses [1][2][3][4]. Plastic deformations disrupt the external appearance and cause dimensional deviations which is a problem when assembling pipe structures, while on the other hand, residual stresses contribute to the appearance of cracks and generally shorten the life of the welded structure [5,6].…”

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

View full text Add to dashboard Cite

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.

show abstract

Welding-induced stresses and distortion in high-strength steel T-joints: Numerical and experimental study

Cited by 39 publications

References 36 publications

Numerical simulation of welding deformation and residual stress in aluminum alloy plate-to-sleeve welded joints

Numerical simulation of welding deformation and residual stress in aluminum alloy plate-to-sleeve welded joints

Grey Relational Analysis and Grey Prediction Model (1, 6) Approach for Analyzing the Electrode Distance and Mechanical Properties of Tandem MIG Welding Distortion

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

Contact Info

Product

Resources

About