Development of Predicted Stress and Strain during Conventional and after Mitigation of Welded Aluminium-Manganese Alloy

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The trend in automotive, aircraft, and marine industries is the increasing use of sheet materials to reduce weight in components and optimize materials performance. Welding is the main fabrication and assembly process in many of these industrial applications. However, in using thin-shell structures in such applications, welding may results in significant residual stresses and out-of-plane distortion. Transient thermal stresses, residual stresses, and distortion sometimes cause cracking and mismatching of joints. High tensile residual stresses are undesirable since they can contribute to fatigue failure. The analysis and measurement of temperature and stresses in component are often too complex to conduct in practise, and thus finite element models provide feasible approach to examine these matters. In this paper, finite element analysis has been performed using the ANSYS package to study the behaviour of longitudinal residual stress and strain in a welded thin aluminium-manganese alloy. The model presented simulates conventional welding and welding with the introduction of welding mitigation technique for enhancement of heat transfer, in which a trailing heat sink was applied. The thermal profiles obtained using the mitigation technique is completely different from those obtained in the conventional cooling. The localized transient residual stress and through-thickness strain after applying a cooling sink are discussed. The transient residual stress behaviour was highly affected by the modified temperature distribution and magnitude due to introducing the heat transfer enhancement.

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Edited by:

L. Pentti Karjalainen, David A. Porter and Seppo A. Järvenpää

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596-601

DOI:

10.4028/www.scientific.net/MSF.762.596

Citation:

F. Soul and M. Ateeg, "Development of Predicted Stress and Strain during Conventional and after Mitigation of Welded Aluminium-Manganese Alloy", Materials Science Forum, Vol. 762, pp. 596-601, 2013

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July 2013

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[1] K. Masubuchi: Analysis of welded structures, London, Pergamon Press, (1980).

[2] T.N. Nguyen and M.A. Wahab: Weld. J. Vol. 75 (1996), 55s–61s.

[3] D. Radaj: Design and analysis of fatigue resistant welded structures,; Cambridge, Abington Publishing, (1990).

[4] M. I. Onsøien, O. M. Akselsen, Ø. Grong and P. E. Kvaale: Weld. J. Vol. 69 (1990), 45–51.

[5] O.I. Steklov: Strength of welded structures in corrosive medium,; Moscow, Mashinostroenie, (1976).

[6] A. Stanhope et al.: Wlding Airframe Structure In Titanium Alloys Tensile Loading As Ameans Of Overcoming Distortion. Metal construction and British journal, 1972, Oct.

[7] C. Conrady and R. Dull: Prediction Techniques For Distortion Control, Report-Edison Welding Institute, (1995).

[8] P. Michaleris and X. Sun: Finite Element Analysis Of Thermal Tensioning Techniques Mitigating Weld Buckling Distortion, 1996 ASME Pressure Vessels and Piping Conference, Montreal, Can, 1996, pp.77-87.

[9] P. Michaleris, J. Dantzig, and D. Tortorelli: Weld. J. 1999, pp. 361s-366s.

[10] C. Conrardy and R. Dull: J. Ship Prod. Vol. 13 (1997), 83-92.

[11] Y. P. Yang, P. Dong, X. Tian and J. Zhang: Prevention Of Hot Cracking Of High Strength Aluminum Alloys By Mechanical Rolling, 5th International Conference on Trends in Welding Research, Georgia US, 1998, 700-705.

[12] Q. Guan, C. X. Zhang and D. L. Guo: Dynamically controlled low stress no-distortion technology and its apparatus', Chinese patent 93101690. 8, (1993).

[13] F. Soul, M. Ateeg, S. Beshay, M. Senfier: Adv. Mater. Res. Vols. 83-86 (2010) pp.1254-1261.

[14] F. A. Soul & Z. Yanhua: Numerical Study Of The Residual Stress Field During Arc Welding With A Trailing Heat Sink, WIT Transactions on The Built Environment, Vol 84, © 2005 WIT Press.

[15] AWS, Nonferrous alloys properties, Metals Handbook, (1991).

[16] J. Goldak, A. Chakravarti and M. Bibby: Metall. Trans. B Vol. 15B (1984), pp.229-305.

[17] V. Pavelic, R. Tanbakuchi, O.A. Uyehara and P.S. Myers: Weld. J. (Res. Suppl. ) Vol. 48 (1969), p. 295s-305s.

[18] J. Li, Q. Guan, Y. W. Shi, D. Guo, Y. Du and Y. Sun: Mater. Process. Technol. Vol. (2004), p.328–335.

[19] R. Kovacevic: Welding process, INTECH: © 2012 Soul and Hamdy, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http: /creativecommons. org/licenses/by/3. 0).

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