Using FEM for Prediction of Thermal Post-Buckling Behavior of Thin Plates During Welding Process
Arc welding is an important joining process widely used in many industrial applications including production of automobile, ships structures and metal tanks. In welding process, the moving electrode causes highly non-uniform temperature distribution that leads to residual stresses and different deviations, especially buckling distortions in thin plates. In order to control the deviations and increase the quality of welded plates, a fixture can be used as a practical and low cost method with high efficiency. In this study, a coupled thermo-mechanical finite element model is coded in the software ANSYS to simulate the behavior of thin plates located by a 3-2-1 positioning system during the welding process. Computational results are compared with recent similar works to validate the finite element models. The agreement between the result of proposed model and other reported data proves that finite element modeling can accurately predict the behavior of welded thin plates.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334778Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2297
 D. Gery, H. Long, P. Maropoulos, "Effects of welding speed, energy input and heat source distribution on temperature variations in butt joint welding", Journal of Materials Processing Technology, vol. 157, pp. 393-401, 2005.
 C. Conrardy, T. D. Huang, D. Harwig, P. Dong, L. Kvidahl, N. Evans, A. Treaster, "Practical Welding Techniques to Minimize Distortion in Lightweight Ship Structures", Journal of ship production, vol. 22, pp. 239-247, 2006.
 J. A. Camelio, S. J. Hu, D. Ceglarek, "Impact of Fixture Design on Sheet Metal Assembly Variation", Journal of Manufacturing Systems, vol. 23, pp. 172-193, 2004.
 A. Anca, A. Cardona, J. Risso, V. D. Fachinotti, "Finite element modeling of welding processes", Applied Mathematical Modeling, vol. 35, pp. 688-707, 2011.
 T. H. Hyde, A. A. Becker, Y. Song, W. Sun, "Failure estimation of TIG butt-welded Inco717 sheets at 620 ºC under creep and plasticity conditions", Computational Materials Science, vol. 35, pp. 35-41, 2006.
 J. Goldak, A. Chakravarti, M. Bibby, "A new finite element model for welding heat sources", Metallurgical Transactions, vol. 14B, pp. 299- 305, 1984.
 T. Schenk, I. M. Richardson, M. Kraska, S. Ohnimus, "A study on the influence of clamping on welding distortion", Computational Materials Science, vol. 45, pp. 999-1005, 2009.
 D. Deng, H. Murakawa, "Prediction of welding distortion and residual stress in a thin plate butt-welded joint", Computational Materials Science, vol. 43, pp. 353-365, 2008.
 Z. Barsoum, I. Barsoum, "Residual stress effects on fatigue life of welded structures using LEFM", Engineering Failure Analysis, vol. 15, pp. 449-467, 2009.
 D. Deng, "FEM prediction of welding residual stress and distortion in carbon steel considering phase transformation effects", Materials and Design, vol. 30, pp. 359-366, 2009.
 K. K. Raju, G. V. Rao, "Thermal post-buckling of thin simply supported orthotropic square plates", Composite Structures, vol. 12, pp. 149-154, 1989.