• Van-The Than Hung Yen University of Technology and Education
  • Tran Ngoc Thanh Hung Yen University of Technology and Education
  • Thi-Thao Ngo Hung Yen University of Technology and Education
Keywords: Longitudinal shrinkage, GMAW, Single V-groove, Bevel-groove


This paper presents effect of groove types on longitudinal shrinkage in butt joint using Gas Metal Arc Welding (GMAW). Comsol software is applied to build a thermal model and determine longitudinal shrinkage of single V-groove and bevel-groove butt joints under changing groove angle and root opening. Results indicate that the longitudinal shrinkage increases with an increase in the groove angle and root opening. For cases of 0 mm root opening, the longitudinal shrinkages of single V-groove butt joints are greater than that of bevel-groove butt joints. Hence, a comparison of simulation and experimental results of a previous study also finds that both estimated shrinkages of two butt joints are in agreement with the experimental measurements corresponding to the same conditions. From these results, one can be said that the simulated model and setting heat source as well as the boundary conditions are consistent with the actual experimental conditions. Therefore, current simulation method can be used to predict and evaluate effect of not only butt joint types but also welding conditions on the shrinkage of workpiece.


B N Sathyanarayana Reddy, Hajare Vilas Shivaram, Manjith madhukar Khade, Utkal S Patil, “Impact of Groove Area on Longitudinal Shrinkage in CO2 Arc Welding Process”. International Journal for Research in Applied Science & Engineering Technology (IJRASET), ISSN: 2321-9653, Vol. 7, No.08, 2019, pp.48- 56.

Gupta, O. P., and De, N. R. 1988. Analysis of Transverse Shrinkage in Restrained and Unrestrained Weld. International Conference on welding technology, Sept. 1988, University of Roorkee, India.

The Lincoln Electric Company. Weldment Distortion, The Procedure Hand-book of Arc Welding, Twelfth ed., The Lincoln Electric Company, Cleveland, Ohio, 1973.

Pavlovsky, V. I., Masubuchi, K. Research in the U. S. S. R. on residual stresses and distortion in welded structures. WRC Bulletin 388, pp. 1-62.

Arshad Alam SYED, Andreas PITTNER, Michael RETHMEIER and Amitava DE, Modeling of Gas Metal Arc Welding Process Using an Analytically Determined Volumetric Heat Source. ISIJ International, Vol. 53, No. 4, 2013, pp. 698–703.

J.A. Goldak, A. Chakravarti and M. Bibby, ’A new finite element model for welding heat sources’. Metallurgical Trans B, 15B, 1984, pp. 299-305.

How to Cite
Van-The Than, Tran Ngoc Thanh, & Thi-Thao Ngo. (2022). EFFECT OF GROOVE TYPES ON LONGITUDINAL SHRINKAGE IN BUTT JOINT FOR GMAW PROCESS. UTEHY Journal of Science and Technology, 31, 35-41. Retrieved from https://tapchi.utehy.edu.vn/index.php/jst/article/view/474