Finite element analysis of residual stress distribution in a thick plate joined using two-pole tandem electro-gas welding

Hwang, Se-Yun; Kim, Yooil; Lee, Jang-Hyun

doi:10.1016/j.jmatprotec.2015.09.037

Cited by 36 publications

(6 citation statements)

References 12 publications

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“…For the welding of thick structures, processes such as submerged arc welding [24], electroslag welding [25] and electrogas arc welding [26] have been applied in industrial production. Nowadays, laser hybrid welding processes [27] are also well known and used along with plasma arc welding [28], especially with "keyhole" technology and in some special cases electron beam welding [29].…”

Section: Buried-arc Welding Technology In Briefmentioning

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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Section: Buried-arc Welding Technology In Briefmentioning

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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show abstract

“…The model takes into account the welding speed effect on the heat flux distribution, and the heating area in front of the arc is smaller than the rear of the arc. The mathematical equation of the heat flux distribution in the front and rear half ellipsoids is [17]:…”

Section: Fig 3 Finite Element Model and Boundary Conditionsmentioning

confidence: 99%

“…These parameters are related to the characteristics of the welding arc and can be determined by measuring the size of the weld profile [18], as shown in Fig. 4; ff, fr is the distribution coefficient of the effective thermal power Q in the front and rear half ellipses, which can be calculated as follows [17,19]:…”

Section: Fig 3 Finite Element Model and Boundary Conditionsmentioning

confidence: 99%

Numerical investigation on the stress evolution of welding process in aluminium alloy 2219

Nie¹,

Wu²,

Gong³

2019

mech

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“…In thick steel plate welding, the efficiency of heat transfer in the “y” direction (with depth, Figure 1 ) of single pass EGW is a key factor affecting the quality of the joint [ 9 , 10 ]. In 2016, Hwang, Kim and Lee [ 11 ] introduced double ellipsoidal moving heat sources to model the temperature profile and residual stress distribution in EGW of marine steel. However, the ellipsoidal method oversimplifies the oscillate-stop heat source path of industrial welding process to 1 dimensional linear case, whereby the movement path in the “y” direction is not considered.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Heat Source Path on Thermal Evolution during Electro-Gas Welding of Thick Steel Plates

Qing

Yang

et al. 2022

Materials

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In recent years, the shipbuilding industry has experienced a growing demand for tighter control and higher strength requirements in thick steel plate welding. Electro-gas welding (EGW) is a high heat input welding method, widely used to improve the welding efficiency of thick plates. Modelling the EGW process of thick steel plates has been challenging due to difficulties in accurately depicting the heat source path movement. An EGW experiment on 30 mm thickness E36 steel plates was conducted in this study. A semi-ellipsoid heat source model was implemented, and its movement was mathematically expressed using linear, sinusoidal, or oscillate-stop paths. The geometry of welding joints, process variables, and steel composition are taken from industrial scale experiments. The resulting thermal evolutions across all heat source-path approaches were verified against experimental observations. Practical industrial recommendations are provided and discussed in terms of the fusion quality for E36 steel plates with a heat input of 157 kJ/cm. It was found that the oscillate-stop heat path predicts thermal profile more accurately than the sinusoidal function and linear heat path for EGW welding of 30 mm thickness and above. The linear heat path approach is recommended for E36 steel plate thickness up to 20 mm, whereas maximum thickness up to 30 mm is appropriate for sinusoidal path, and maximum thickness up to 35 mm is appropriate for oscillate-stop path in EGW welding, assuming constant heat input.

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Finite element analysis of residual stress distribution in a thick plate joined using two-pole tandem electro-gas welding

Cited by 36 publications

References 12 publications

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

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

Numerical investigation on the stress evolution of welding process in aluminium alloy 2219

The Effect of Heat Source Path on Thermal Evolution during Electro-Gas Welding of Thick Steel Plates

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