Finite Element Prediction of Residual Stress and Deformation Induced by Double-Pass TIG Welding of Al 2219 Plate

Ahmad, Abdulrahaman Shuaibu; Wu, Yunxin; Gong, Hai; Nie, Lin

doi:10.3390/ma12142251

Cited by 23 publications

(13 citation statements)

References 33 publications

(40 reference statements)

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“…Balram and Rajyalakshmi studied the multi-pass arc welding of dissimilar metals, and their model results are in good match with experiments [22]. Double-pass GTAW welding of aluminum plates was studied by other authors [23]. The model well predicted residual stresses and distortions.…”

Section: Introductionmentioning

confidence: 76%

Untitled

2021

brod

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Hard-facing process is widely used for improving the wear resistance of mild steel. During the application of hard-facing, due to high temperatures, residual stresses and deformations may occur. The tensile residual stresses may cause crack propagation on the hard-faced part. The purpose of this study is to utilise minimum computer work for minimizing these residual stresses and deformations during the hard-facing of mild steel. The fully coupled transient heat transfer and structural analysis was performed for calculations. The double-ellipsoidal moving heat source was utilised to simulate the heat input from the gas metal arc welding (GMAW). Only eight numerical simulations were performed to minimize the computer work; the grey relational analysis was used for minimizing both the residual stresses and deformations. Welding speed, welding current, and welding pattern were considered as changing parameters. At the end of the numerical and statistical solutions, it is observed that heat input should be kept minimum to minimize the stresses and deformations. But it is obvious that the heat input must provide a temperature greater than the melting point. Straight patterns always produce better results for minimizing stresses and deformations. Transverse stress at the beginning and end of the longitudinal path gets higher significantly after cooling. Cooling does not affect the total deformation.

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Section: Introductionmentioning

confidence: 76%

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2021

brod

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“…Its low density, high strength, weldability, and excellent fatigue resistance makes it essential and favorable in the manufacture of aircraft's engine parts such as oxidizers, fuel tank, etc. 19,20 Determination of Johnson-Cook model parameters for the Al 2219…”

Section: Methodsmentioning

confidence: 99%

Coupled finite and discrete element shot peening simulation based on Johnson–Cook material model

Ahmad

Gong

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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Shot peening is an essential treatment that produces a beneficial compressive layer on the material’s surface, which significantly improves its fatigue life. To minimizes the cost and resources used in determining the finest shot peening parameters based on the experimental approach, a numerical model capable of computing the induced compressive residual stress accurately is required. Hence, the numerical simulation of the shot peening process with multiple random shots that depict the actual shot peening is presented in this paper. The model is developed using the coupled finite and discrete element methods. The two numerical tools were coupled via code in ABAQUS, whereby shot–shot and shot–target interaction behaviors were accurately included. The induced compressive residual stress was computed due to the multiple random shots impact based on the Johnson–Cook material model. The model was experimentally validated and applied to evaluated the influence of shot velocity, shot size, and angle of impact on the final compressive residual stress.

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“…For example, Goldak's heat source model was implemented with a FORTRAN subroutine DFLUX in ABAQUS to simulate a moving welding torch and calculate heat flux in thermal analysis to predict temperatures (Ref. 39).…”

Section: Welding Researchmentioning

confidence: 99%

Recent Advances in the Prediction of Weld Residual Stress and Distortion - Part 1

Yang¹

2021

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Residual stresses and distortions are the result of complex interactions between welding heat input, the material’s high-temperature response, and joint constraint conditions. Both weld residual stress and distortion can significantly impair the performance and reliability of welded structures. In the past two decades, there have been many significant and exciting developments in the prediction and mitigation of weld residual stress and distortion. This paper reviews the recent advances in the prediction of weld residual stress and distortion by focusing on the numerical modeling theory and methods. The prediction methods covered in this paper include a thermo-mechanical-metallurgical method, simplified analysis methods, friction stir welding modeling methods, buckling distortion prediction methods, a welding cloud computational method, integrated manufacturing process modeling, and integrated computational materials engineering (ICME) weld modeling. Remaining challenges and new developments are also discussed to guide future predictions of weld residual stress and distortion.

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Finite Element Prediction of Residual Stress and Deformation Induced by Double-Pass TIG Welding of Al 2219 Plate

Cited by 23 publications

References 33 publications

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Coupled finite and discrete element shot peening simulation based on Johnson–Cook material model

Recent Advances in the Prediction of Weld Residual Stress and Distortion - Part 1

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