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Effects of Preheat and Interpass Temperature on the Residual Stress and Distortion on the T-Joint Weld

[+] Author Affiliations
Guangming Fu, Marcelo Igor Lourenço, Segen F. Estefen

Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

Menglan Duan

China University of Petroleum (Beijing), Beijing, China

Paper No. OMAE2014-23514, pp. V08AT06A047; 8 pages
doi:10.1115/OMAE2014-23514
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8A: Ocean Engineering
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4550-9
  • Copyright © 2014 by ASME

abstract

The finite element model of ABAQUS combined with FORTRAN subroutines was developed to predict the residual stress and deformation of T-joint welds under different preheat and inter-pass temperature. A calibrated and sequentially coupled thermal and mechanical 3D finite element (FE) model is developed, and Goldak’s double ellipsoidal heat source model is implemented into the numerical model. The welding induced imperfections, including the residual stress and distortion are discussed in this paper. The results show that vertical deformation depend significantly on the preheat temperature and inter-pass temperature. The influences of preheat and interpass temperature on the residual stress are not significant.

Copyright © 2014 by ASME
Topics: Temperature , Stress

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