Predicting residual stresses and distortion during multisequence welding of large size structures using FEM

Keivani, R.; Jahazi, Mohammad; Tan, P.; Khodabandeh, Alireza; Afshar, M. Reza

doi:10.1007/s00170-014-5833-4

Cited by 29 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Guangming et al [19] also studied effect of boundary conditions on residual stress and distortion in T-joint welds. Guoxiang et al [20], Asifa et al [21], Keivani et al [22], Reenal et al [23] predicted the residual stress and welding deformation in butt-weld joint for different clamped position on the plates.…”

Section: Thermal Analysismentioning

confidence: 99%

Residual Deflections and Stresses in a Thick T-Joint Plate Structure

Adak¹,

Cg²

2016

J Appl Mech Eng

View full text Add to dashboard Cite

In this paper transient thermo-elastic-plastic problem of a thick rectangular T-joint fillet weld plates is solved numerically in which we need to determine the temperature distribution, thermal deflections and stresses when the boundary conditions are known. At the T-joint section (weld pool area) high constant temperature is considered initially and convection boundary conditions are applied at other three edges as well as top and bottom surface of the plate. T-joint section and vertical plate is fixed (case 1) for plate stability, only T-joint section is fixed (case 2) as a boundary constraint for stress analysis. Numerical technique (Finite element method, Ansys software) is used to obtain the solution of the boundary value problem.

show abstract

Section: Thermal Analysismentioning

confidence: 99%

Residual Deflections and Stresses in a Thick T-Joint Plate Structure

Adak¹,

Cg²

2016

J Appl Mech Eng

View full text Add to dashboard Cite

show abstract

“…Q is the internal heat source, n is the normal direction, q is the heat flux density, and T p is the specified temperature. Heat source was defined based on Goldak twin-elliptic [6]. Figure 6 demonstrates a model of Fig.…”

Section: Finite Element Simulationmentioning

confidence: 99%

“…Figure 6 demonstrates a model of Fig. 6 Heat source model based on Goldak theory [6] heat source. According to the figure, front and rear parts of the heat source are a quarters of elliptic.…”

Section: Finite Element Simulationmentioning

confidence: 99%

“…Finite element simulation and validation via experimental observations are extensively used in prediction of thermal residual stress and temperature distribution in welding structures [2][3][4][5][6]. Destructive evaluation methods used in analyzing residual stress of industrial purposes needs high knowledge of repair and maintenance techniques, which is very costly.…”

Section: Introductionmentioning

confidence: 99%

“…They also showed that preheating temperature is an influential factor for obtaining uniform grain distribution. Keivani et al [6] used FEM to find nine sequences in T-joint configurations on residual stress and distortion. It has been showed that by use of suitable sequence, the residual stress is significantly decreased.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and numerical investigation into effect of weld configuration geometry on distribution of residual stress and temperature in the welded parts of stainless steel

Nateghi

Volukola

2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

In multi-pass grooved welding, residual stress and corresponding distortion are highly affected by welding process parameters, material properties, and fixture design. Therefore, having knowledge about value of the residual stress and transient temperature yields long life joints with high dimensional accuracy. In the present study, three joints with different T-joint configurations made of 316 stainless steel were fabricated through gas tungsten arc welding process. The first configuration includes single bevel without root face and gap, the second includes single bevel with root face and 1 mm gap, and the third includes double bevels with root face and 1 mm gap. In order to evaluate temperature and residual stress distribution, finite element simulation of aforementioned process using SIMUFACT WELDING software along with hole-drilling method (as semidestructive evaluation) and ultrasonic method (as nondestructive evaluation) were performed. Also, thermal history of welding process was recorded by K-type thermocouple. Research findings showed that the thermal history and residual stress distribution which were obtained through FE simulation are in high agreement with those derived from both ultrasonic and hole-drilling methods. Furthermore, the change in joint configuration significantly affects transverse residual stress but it has not great impact on longitudinal residual stress. Also, the highest and lowest residual stress and corresponding distortion are for the first and third configurations, respectively.

show abstract

Procedure to predict residual stress pattern in spray transfer multipass welding

Lopez-Jauregi

Ulacia

Esnaola

et al. 2014

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Gas metal arc welding (GMAW) is one of the most used joining method in the industry.However, one of the main problems of this process is the generation of residual stresses which have direct impact on the fatigue life of welded components. Nevertheless, residual stress pattern prediction is complex and requires the simulation of the welding process. Currently, there are different numerical methods to predict the residual stresses generated in GMAW process, being Goldak's method one of the most widely used model. However, the main limitation of these methods is that they require defining many parameters experimentally and consequently this method is not valid during design process.Alternatively, in this work, it is developed a procedure where the heat source is defined based on the welding physics for spray transfer welding. The developed procedure has been validated for a spray transfer multipass butt weld case. Results have shown good correspondence with an average deviation of 9.16% in thermal field and 42 MPa in the final residual stress field. Thus, the developed procedure has been validated as a cost effective alternative method to estimate residual stress pattern in spray transfer multipass welding. Furthermore, the developed method does not require any welding experimental characterization once the efficiency of the used welding machine is defined. The proposed method can be used as a valid tool to optimize the welding process in order to minimize the residual stress field and, consequently, improve the fatigue life.

show abstract

Predicting residual stresses and distortion during multisequence welding of large size structures using FEM

Cited by 29 publications

References 14 publications

Residual Deflections and Stresses in a Thick T-Joint Plate Structure

Residual Deflections and Stresses in a Thick T-Joint Plate Structure

Experimental and numerical investigation into effect of weld configuration geometry on distribution of residual stress and temperature in the welded parts of stainless steel

Procedure to predict residual stress pattern in spray transfer multipass welding

Contact Info

Product

Resources

About