Predictions of creep rupture of a reactor pressure vessel in a severe hypothetical accident needs to accurately take into account the interactions between creep and damage phenomena. This paper presents an approach based on a model coupling elasto-visco-plasticity and damage, formulated within the framework of continuous damage theory. The model and its implementation in a finite element software are presented and special attention is devoted to the procedure enabling the identification of the parameters of the model. The approach is validated on two tests of the program “RUPTHER” which concerns A508 cl3 steel cylinder and on the EC-FOREVER experiment (A533 steel mockup) developed as part of the European Commission Program “Assessment of Reactor Vessel Integrity.”
Prediction of Creep Rupture of Pressure Vessels
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division October 31, 2002; revision received September 2, 2003. Associate Editor: R. M. Iyengar.
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Bergheau, J., Devaux, J., Mottet, G., and Gilles, P. (May 5, 2004). "Prediction of Creep Rupture of Pressure Vessels ." ASME. J. Pressure Vessel Technol. May 2004; 126(2): 163–168. https://doi.org/10.1115/1.1687799
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