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Modelling of residual stresses in a narrow-gap welding of ultra-thick curved steel mockup.
- Source :
-
Journal of Materials Processing Technology . Jun2018, Vol. 256, p239-246. 8p. - Publication Year :
- 2018
-
Abstract
- A plane strain model, an axisymmetric model and a lumped-pass three-dimensional (3D) model were employed to simulate the residual stresses in a narrow-gap welding 300 mm-thick curved steel mockup. The lumped-pass 3D model was built with the lumping scheme based on the two-dimensional (2D) temperature field result. The residual stresses on the top surface of the mockup were measured using the hole-drilling method and compared with the simulated stresses. Results show that the plane strain model cannot capture the asymmetric conditions of the curved mockup; the through-thickness transverse stress within the weld zone presents a self-equilibrated distribution, and the through-thickness hoop stress within the weld zone are almost tensile with the peak value occurring at a certain depth (8 mm) beneath the top and bottom surfaces. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RESIDUAL stresses
*WELDING
*STEEL
*DRILLING & boring
*HOOP stresses (Physics)
Subjects
Details
- Language :
- English
- ISSN :
- 09240136
- Volume :
- 256
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Processing Technology
- Publication Type :
- Academic Journal
- Accession number :
- 129008117
- Full Text :
- https://doi.org/10.1016/j.jmatprotec.2018.02.024