Analysis of Residual Stresses and Distortions in Girth-Welded Carbon Steel Pipe
Prabhat Kumar Sinha1, Raisul Islam2, Chandan Prasad3, Mohd. Kaleem4
1Prabhat Kumar Sinha, Department of Mechanical Engineering, Sam Higginbottom Institute of Agriculture Technology and Sciences, Allahabad (U.P), India.
2Raisul Islam, Department of Mechanical Engineering, Sam Higginbottom Institute of Agriculture Technology and Sciences, Allahabad (U.P), India.
3Chandan Prasad, Department of Mechanical Engineering, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P), India.
4Mohd. Kaleem, Department of Mechanical Engineering, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P),, India.
Manuscript received on 21 May 2013 | Revised Manuscript received on 28 May 2013 | Manuscript published on 30 May 2013 | PP: 192-199 | Volume-2 Issue-2, May 2013 | Retrieval Number: B0630052213/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This article, the weld joint suffers various types of weld-induced residual stress fields (hoop and axial) and deformation patterns (axial shrinkage, radial shrinkage). In this paper Three-dimensional finite element modeling of residual stresses in a girth-welded carbon steel pipe is presented with an emphasis on modeling procedures for the global residual stress characteristics. To precisely capture the distortions and residual stresses, computational methodology based on three-dimensional finite element model for the simulation of gas tungsten arc welding in thin-walled pipe is presented. Butt-weld geometry with single “V” for a 300 mm outer diameter cylinder of 3 mm thick is used. The complex phenomenon of arc welding is numerically solved by sequentially coupled transient, nonlinear thermo-mechanical analysis. The accuracy of both the thermal and structural models is validated through experiments for temperature distribution, residual stresses and distortion. The simulated result shows close correlation with the experimental measurements.
Keywords: FEM; Welding Simulations; Distortions; Residual Stresses; Girth Weld.
Scope of the Article: Predictive Analysis