Sage Journals: Discover world-class research

Abstract

Welding process parameters and joint fit-ups significantly affect angular distortion patterns. By using constraints at proper positions the angular distortion can be minimized. In the present work the effect of constraints in the form of tack welds to minimize angular distortion in one-sided fillet welds has been analysed. It has been observed that proper positioning of tacks plays an important role in controlling angular distortion. The process was modelled using the three-dimensional finite element technique. Three-dimensional transient thermal analyses were done for predicting temperature distributions by considering a moving heat source. The element birth and death technique was used for simulating filler material deposition. The fillet welds were sectioned and microstructure zones were measured. The thermal model was verified by comparing the temperatures obtained from the thermal analysis with experimental results. Transient thermal and non-linear structural analyses were carried out in order to predict angular distortions.

Keywords

finite element analysis submerged arc welding transient thermal analysis temperature distribution element birth and death method thermomechanical analysis angular distortions

References

Kamala

Goldak

J. A.

Error due to two dimensional approximation in heat transfer analysis of welds. Weld. J., 1993, 72(9), 440s–446s.

Brown

Song

Implication of three-dimensional numerical simulations of welding large structures. Weld. J., 1992, 71(2), 55s–62s.

Tsai

C. L.

Cheng

W. T.

Welding distortion of thin-plate panel structures. Weld. J., 1999, 78(5), 156s–165s.

Tsai

C. L.

Jung

G. H.

Plasticity-based distortion analysis for fillet welded thin-plate T-joints. Weld. J., 2004, 83(6), 177s–187s.

Teng

Tso-Liang

Fung

Chin-Ping

Chang

Peng-Hsiang

Yang

Wei-Chun

, Analysis of residual stresses and distortions in T-joint fillet welds. Int. J. Pressure Vessels and Piping, 2001, 78, 523–538.

Pathak

A. K.

Datta

G. L.

Three-dimensional finite element analysis to predict the different zones of microstructures in submerged arc welding. Proc. Instn Mech. Engrs, Part B: J. Engineering Manufacture, 2004, 218(B3), 269–280.

Pathak

A. K.

Three-dimensional finite element analysis of heat transfer in arc welding. PhD Thesis, Indian Institute of Technology, Kharagpur, India, 2002.

Friedman

Thermomechanical analysis of welding process using finite element method. Trans. ASME, J. Pressure Vessel Technol., 1975, 97(3), 206–213.

Okada

Application of melting efficiency and its problems. J. Jap. Weld. Soc. 1977, 46, 53–61.

10.

Theory reference, Southpointe, Ansys, Inc., Canonsburg, Pennsylvania, 2002.

11.

Adak

Welding distortion prediction and their mitigation techniques using pseudolinear constant stiffness system. PhD Thesis, Indian Institute of Technology, Kharagpur, India, 2005.

12.

Michaleris

DeBiccari

Prediction of welding distortion. Weld. J., 1997, 76(4), 172s–180s.

13.

Cheng

In-plane shrinkage strains and their effects on welding distortion in thin-wall structures. PhD Thesis, The Ohio State University, Columbus, Ohio, 2005.

14.

Alberg

Simulation of welding and heat treatment modelling and validation. PhD Thesis, Luleä University of Technology, Sweden, 2005.

15.

Oates

W. R.

Saitta

A. M.

(eds) Welding hand book, vol. 4, 8th edition, 1998 (American Welding Society, Miami, Florida).

16.

Radhakrishnan

V. M.

Welding technology and design, 2002 (New Age International Ltd, New Delhi).

17.

Mandal

N. R.

Adak

Fusion zone and HAZ prediction through 3-D simulation of welding thermal cycle. J. Mech. Behaviour of Mater., 2001, 12(6), 401–414.

18.

Sefarian

The metallurgy of welding, 1962 (Chapman and Hall Ltd, London).

19.

Lancaster

J. F.

Metallurgy of welding, 1993 (Chapman and Hall Ltd, London).

Modelling the effects of constraints and single axis welding process parameters on angular distortions in one-sided fillet welds

Abstract

Abstract

Keywords

References