Welding distortion and inherent deformation under temporary tacking and its released states

Abstract

In the present study, the detailed welding distortion of bead welded plates under temporary tacking state and released state was predicted by thermal elastic-plastic finite element model (FEM) and also measured by the digital image correlation (DIC) method. It was found that the residual welding angular distortion can be reduced to about 50–60% by temporary tacking, while the residual transverse shrinkage and longitudinal shrinkage are less affected. Further, the welding distortion with different ratios of temporary tacking length to weld length for various dimensions of bead welded plates was quantitatively investigated by FEM. The inherent deformations which are described by the integrated values of residual plastic strains were proved to be the same before and after releasing the temporary tacking. The effect of temporary tacking on the welding distortion and inherent deformation were analysed in details.

Keywords

Temporary tacking Welding distortion Inherent deformation FEM DIC

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References

Zacharia

, Vitek

J. M.

, Goldak

J. A.

, DebRoy

T. A.

, Rappaz

and Bhadeshia

H. K. D. H.

: ‘Modeling of fundamental phenomena in welds’, Model. Simul. Mater. Sci. Eng., 1995, 3, (2), 265–288. doi: 10.1088/0965-0393/3/2/009

Lindgren

L. E.

: ‘Numerical modelling of welding’, Comput. Methods Appl. Mech. Eng., 2006, 195, 6710–6736. doi: 10.1016/j.cma.2005.08.018

Michaleris

: ‘Modelling welding residual stress and distortion: current and future research trends’, Sci. Technol. Weld. Joining, 2011, 16, 363–368. doi: 10.1179/1362171811Y.0000000017

Ueda

, Murakawa

and Ma

: ‘Welding deformation and residual stress prevention’, 2012, Waltham, Elsevier.

http://www.twi-global.com/technical-knowledge/job-knowledge/distortion-corrective-techniques-037/

Liu

and Zhang

J. X.

: ‘Numerical simulation of transient welding angular distortion with external restraints’, Sci. Technol. Weld. Joining, 2009, 14, (1), 26–31. doi: 10.1179/136217108X341175

Park

J. U.

, Lee

H. W.

and Bang

H. S.

: ‘Effects of mechanical constraints on angular distortion of welding joints’, Sci. Technol. Weld. Joining, 2002, 7, (4), 233–239. doi: 10.1179/136217102225004266

Richter-Trummer

, Suzano

, Beltrão

, Roos

, dos Santos

J. F.

and de Castro

P. M. S. T.

: ‘Influence of the FSW clamping force on the final distortion and residual stress field’, Mater. Sci. Eng. A, 2012, 538, 81–88. doi: 10.1016/j.msea.2012.01.016

, Huang

and Murakawa

: ‘Effect of jig constraint position and pitch on welding deformation’, J. Mater. Process. Technol., 2015, 221, 154–162. doi: 10.1016/j.jmatprotec.2015.02.022

10.

Schenk

, Richardson

I. M.

, Kraska

M.,

and Ohnimus

: ‘A study on the influence of clamping on welding distortion’, Comp. Mater. Sci., 2009, 45, (4), 999–1005. doi: 10.1016/j.commatsci.2009.01.004

11.

Deo

M. V.

and Michaleris

: ‘Mitigation of welding induced buckling distortion using transient thermal tensioning’, Sci. Technol. Weld. Joining, 2003, 8, (1), 49–54. doi: 10.1179/136217103225008919

12.

Adak

and Mandal

N. R.

: ‘Numerical and experimental study of mitigation of welding distortion’, Appl. Math. Model., 2010, 34, (1), 146–158. doi: 10.1016/j.apm.2009.03.035

13.

Conrardy

, Huang

T. D.

, Harwig

, Dong

, Kvidahl

, Evans

and Treaster

: ‘Practical welding techniques to minimize distortion in lightweight ship structures’, J. Ship Prod., 2006, 22, (4), 239–247.

14.

Abid

and Siddique

: ‘Numerical simulation to study the effect of tack welds and root gap on welding deformations and residual stresses of a pipe-flange joint’, Int. J. Pres. Ves. Pip., 2005, 82, (11), 860–871. doi: 10.1016/j.ijpvp.2005.06.008

15.

Heinze

, Schwenk

and Rethmeier

: ‘The effect of tack welding on numerically calculated welding-induced distortion’, J. Mater. Process. Technol., 2012, 212., 308–314. doi: 10.1016/j.jmatprotec.2011.09.016

16.

Peters

W. H.

and Ranson

W. F.

: ‘Digital imaging techniques in experimental stress analysis’, Opt. Eng., 1981, 21, 427–431.

17.

Chu

T. C.

, Rasson

W. F.

, Sutton

M. A.

and Peters

W. H.

: ‘Applications of digital-image-correlation techniques to experimental mechanics’, Exp. Mech., 1985, 25, 232–244. doi: 10.1007/BF02325092

18.

Sutton

M. A.

, Cheng

M. Q.

, Peters

W. H.

, Chao

Y. J.

and McNeill

S. R.

: ‘Application of an optimized digital correlation method to planar deformation analysis’, Image Vision Comput., 1986, 4, (3), 143–150. doi: 10.1016/0262-8856(86)90057-0

19.

Lyons

J. S.

, Liu

and Sutton

M. A.

: ‘High-temperature distortion measurements using digital-image correlation’, Exp. Mech., 1996, 36, 64–70. doi: 10.1007/BF02328699

20.

Xiao

Z. Z.

, Liang

and Yu

D. H.

: ‘Study on the technologies of rapid three-dimension optical measurement for welding deformation of sheet materials’, Adv. Mater. Res., 2010, 97, (101), 4251–4256. doi: 10.4028/www.scientific.net/AMR.97-101.4251

21.

De Strycker

, Lava

and Van Paepegem

: ‘Measuring welding distortions with the digital image correlation technique’, Weld. J., 2011, 90, 107–112.

22.

Shibahara

, Ikushima

and Itoh

: ‘Development of in situ measurement system for welding deformation using digital cameras’, Sci. Technol. Weld. Joining, 2012, 17, (6), 511–517.

23.

Deng

, Murakawa

and Ma

: ‘Predicting welding deformation in thin-plate panel structure by means of inherent strain and interface element’, Sci. Technol. Weld. Joining, 2012, 17, (1), 13–21. doi: 10.1179/1362171811Y.0000000065