Shock and Vibration

Shock and Vibration / 2008 / Article
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The International Conference on Engineering Dynamics 2007

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Volume 15 |Article ID 683506 |

A.C. Bezerra, L.C. Vieira, D.A. Rade, A. Scotti, "On the Influence of Welding Residual Stresses on the Dynamic Behavior of Structures", Shock and Vibration, vol. 15, Article ID 683506, 12 pages, 2008.

On the Influence of Welding Residual Stresses on the Dynamic Behavior of Structures

Received29 Apr 2007
Revised29 Apr 2007


It is widely known that welding processes induce the generation of residual stresses, which, through the so-named stress stiffening effect, can influence the static and dynamic behavior of the welded components. Thus, accounting for this influence becomes important for the understanding of experimental observations and accurate modeling of the dynamic behavior. In this study, the numerical and experimental characterization of the influence of welding residual stresses on the flexural dynamic characteristics of rectangular plates is addressed. It is suggested a general modeling methodology based on finite elements comprising three subsequent analyses, namely: a thermal analysis to compute the transient temperature history due to welding thermal loading; a structural analysis accounting for plastic strains to obtain the welding residual stress fields and geometric distortions, and a dynamic analysis to compute the dynamic characteristics taking into account the stress-stiffening effect and geometric distortions. The results demonstrate the importance of considering the influence of welding residual stresses in the prediction of the flexural dynamic behavior of plates and the feasibility and efficiency of the simplified modeling approach, which can readily be extended to more complex situations, for characterizing this influence.

Copyright © 2008 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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