Experimental and Numerical Study on Effect of Weld Reinforcement on Angular Distortion of SAW Square Butt Welded Plates

H. K. Narang; M. M. Mahapatra; P. K. Jha; PVSS Sridhar; P. Biswas

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자료유형: 학술저널

저자정보: H. K. Narang (National Institute of Technology) M. M. Mahapatra (Indian Institute of Technology) P. K. Jha (Indian Institute of Technology) PVSS Sridhar (Indian Institute of Technology) P. Biswas (Indian Institute of Technology)

저널정보: 대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌第36卷第2號

발행연도: 2018.4

수록면: 48 - 59 (12page)

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Weld reinforcements play vital role in controlling different formation of inherent strains in the heat-affected zone in arc welded joints. It is desirable to have adequate weld reinforcements on both the top and bottom sides of butt joint such that shrinkage force effects of both the reinforcements would be cancelling the angular distortion. In this study, it has been established by experiments that acceptable top and bottom weld reinforcements can be achieved and angular distortion can be controlled in square butt joints through submerged arc welding (SAW) done from both the sides with accurate control of welding process parameters. Such process does not require use of costly backing strip and instead a flux bed can be used for the purpose. Modeling of the process was also carried out using 3-D thermomechanical finite element (FE) analysis. Moving distributed heat source, weld reinforcements on top and bottom side, weld deposition in each welding pass and temperature dependent thermos-physical properties were used in the thermomechanical analysis for predicting the temperature profiles and angular distortion patterns The numerically predicted temperature distribution and distortion patterns indicated close agreement with the experimentally observed results.

#Reinforcement #Moving heat source #Finite element #Thermal analysis #Nonlinear #Elasto-plastic analysis #Distortion

참고문헌 (30)

참고문헌 신청

[학술지(정기간행물)] - V. Kamala / 1993 / Error due to two dimensional approximation in heat transfer analysis of welds / Welding Journal 72 (9) : 440s ~ 446s

[학술지(정기간행물)] - T. Tso-Liang / 2001 / Analysis of residual stresses and distortions in T-joint fillet welds / International Journal of Pressure Vessels and Piping 78 : 523 ~ 538

[단행본] - D. Radaj / 1992 / Heat effects of welding / Springer-Verlag GmbH

[학술지(정기간행물)] - P. Michaleris / 1997 / Prediction of welding distortion / Welding Journal 76 (4) : 172s ~ 80s

[학술지(정기간행물)] - O. Muransky / 2012 / The effect of plasticity theory on predicted residual stress fields in numerical weld analyses / Computational Materials Science 54 : 125 ~ 134

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