Residual Stresses of Welded Structures and Their Effect on the Dynamic Behaviour
The vibration behaviour of local ship structures is highly influenced by residual stresses and predeformations. Measurements have shown that differences of up to 50% in natural frequencies due to welding stresses are possible (Hanke ). Uncertainties of this magnitude contain a high risk regarding the estimation of the vibration behaviour during operation of the ship. This implies an economic threat in case of failure to fulfil contracts and therefore an improvement of the prediction of local vibration behaviour is needed.
KeywordsResidual Stress Mode Shape Residual Stress Measurement Vibration Behaviour Maximum Compression Stress
- 1.Hanke, A. and Schlottmann, G., Model Updating of Ship Decks loaded with Welding Stresses, In Proceedings of ISMA 2006, edited by P. Sas and M. DeMunck, Leuven, 2006, 2579–2592.Google Scholar
- 2.Ueda, Y. and Yuan, M. G., Prediction of residual stresses in butt-welded plates using inherent straines, ASME J. of Engineering Materials and Technology, 417–423, 1993Google Scholar