Open AccessSimulation of the residual stress in a multi-pass oil and gas pipe weld joint
Author(s) -
Mahmood Hasan Alhafadhi,
György Krállics
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1527/1/012005
Subject(s) - residual stress , welding , residual , materials science , joint (building) , computer simulation , structural engineering , work (physics) , thermal , cylinder stress , stress (linguistics) , mechanics , composite material , mechanical engineering , ultimate tensile strength , engineering , computer science , physics , linguistics , philosophy , algorithm , meteorology
In this paper, a welding simulation procedure is developed using the FE software MSC Marc to predict the residual stresses.Numerical simulation was used to predict the thermal, mechanical and residual stresses behaviour in dissimilar material welded pipes which were found to be in good concurrence with experiments. Both two-dimensional FE model (2D) and three-dimensional FE model (3D) models are used to simulate the residual stressesin different directions in several regions of the weld zone under the same welding conditions. The 2D modelwas used toreduce the time and cost of numerical simulation.The aimof the present work is to understand the evolution of residual stresses (axial, radial and hoop stresses) in weldments. The results of thesimulationreveal that the hoop and the axial residual stresses around the weld region arenoticeablyvarying from those in the steady range.