PSI - Issue 5

Rui F. Martins et al. / Procedia Structural Integrity 5 (2017) 633–639 Diogo F. Almeida et al. / Structural Integrity Procedia 00 (2017) 000 – 000

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The welding process was simulated by finite element software ANSYS® and the results obtained numerically for the residual stresses were compared with the results obtained experimentally through the hole-drilling method. It was found that for the maximum principal stress, a deviation of 19 % exists, while for the minimum principal stress it showed a deviation value of 9 %. The weld bead obtained numerically presented slight deviations from the macrograph sample, and the errors related to the depth of the pool were around 2%.

Acknowledgements

The authors would like to thank the Portuguese Foundation for Science and Technology through project ref. UID/EMS/00667/2013.

References

Almeida, D.F., Numerical simulation of residual stresses and deformations resultant from the application of TIG welding process, MSc. thesis (in Portuguese), FCT-UNL, 2012. ANSYS  , ANSYS Theory Reference, ANSYS Elements Reference, ANSYS Modeling and Meshing Guide, ANSYS Structural Analysis Guide, ANSYS Thermal Analysis Guide, Ansys, Inc., 12.0 ASTM E 837-01, Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage Method, Annual Book of ASTM Standards, Vol 03.01, ASTM International Bezerra, A. (2006). Simulação numérica da soldagem com aplicação à caracterização do comportamento dinâmico de estruturas soldadas. Dissertação de Doutoramento, Universidade Federal de Uberlândia, Uberlândia Cruz, HJT; Martins, RF; Viegas, JCG; Aveiro, JLG (2010). "Redesign of exhaust systems for naval gas turbines: usage of a new Cr-Mn austenitic stainless steel", Materials Science Forum, Advanced Materials Forum V, Vols. 636-637, pp. 497-503, Trans Tech Publications Inc., Switzerland Deng, D. and Murakawa, H. (2006) “Numerical simulation of temperature field and residual stress in multi -pass welds in stainless steel pipe and comparison with experimental measurements”, Computational Materials Science, No. 37, pp. 269 -277 Deng, D., Murakawa, H. and Liang, W. (2008) “Numerical and experimental investigations on welding residual stress in multi -pass butt-welded a ustenitic stainless pipe”, Computational Materials Science, No. 42, pp. 234 -244 Depradeux, L., Simulation Numerique du Soudage – Acier 316L validation sur cas tests de complexite croissante. Thèse de doctorat, L’Institut National Des Sciences Appliquees de Lyon, France, 2004. Fitzpatrick, M.E. and Edwards, L. (1998) “Fatigue Crack/Residual Stress Field Interactions and Their Implications for Damage - Tolerant Design”, ASM International, Vol. 7, pp. 190-198 Funderburk, R. (1999), “Key Concepts in Welding Engineering”, Welding Innovation, Vol. XVI No. 1 Goldak, J. and Akhlaghi, M. (2005), “Computational Welding Mechanics”, Springer Science + Business Media, Inc., Chapter II Martins, R.F.; Branco, C.M.; Gonçalves-Coelho, A.; Gomes, E.C. (2008). “Failure Mechanisms on Exhaust Systems of Naval Gas Turbines”, Materials Science Forum Vols. 587-588, Advanced Materials Forum IV, pp.946-950, (ISBN: 0-87849-373-5, 1 volume), Trans Tech Publications Inc., Switzerland Martins, R.F.; Moura Branco, C.; Gonçalves-Coelho, A.M.; Gomes, Edgar C. (2009). “A failure analysis of exhaust systems for naval gas turbines. Part II: Design changes”, Eng Fail Analysis, 16, pp. 1324 -1338 Pozo-Morejón, J. A., Quintero-Acosta, P. E., Cruz-Crespo, A. e Díaz- Cedré E., (2011), “Análisis térm ico de soldadura GTAW sobre placa de acero AISI 316L empleando el método de elementos finitos”, Soldagem & Inspeção, Vol. 16 No. 3, São Paulo Wentz, A. (2008). Simulações de soldagem por arco e resistência elétrica usando o método dos elementos finitos. Dissertação de Mestrado, Universidade Federal do Rio Grande do Sul, Porto Alegre

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