Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
1 PublicationCOVERS WP4 Benchmark 1 Fracture mechanical analysis of a thermal shock scenario for a VVER-440 RPV
Abendroth, M.; Altstadt, E.
This paper describes the analytical work done by modelling and evaluating a thermal shock in a WWER-440 reactor pressure vessel due to an emergency case. An axial oriented semielliptical underclad/surface crack is assumed to be located in the core weld line. Threedimensional finite element models are used to compute the global transient temperature and stress-strain fields. By using a three-dimensional submodel, which includes the crack, the local crack stress-strain field is obtained. With a subsequent postprocessing using the j-integral technique the stress intensity factors KI along the crack front are obtained. The results for the underclad and surface crack are provided and compared, together with a critical discussion of the VERLIFE code.
Keywords: thermal shock; crack intensity factor; j-integral; fracture toughness; VVER-440
-
Wissenschaftlich-Technische Berichte / Helmholtz-Zentrum Dresden-Rossendorf; FZD-474 2007
ISSN: 1437-322X
Downloads
Permalink: https://www.hzdr.de/publications/Publ-10111