Modelling 3D crack propagation in ageing graphite bricks of Advanced Gas-cooled Reactor power plant
Journal Title: Frattura ed Integrità Strutturale - Year 2015, Vol 9, Issue 34
Abstract
In this paper, crack propagation in Advanced Gas-cooled Reactor (AGR) graphite bricks with ageing properties is studied using the eXtended Finite Element Method (X-FEM). A parametric study for crack propagation, including the influence of different initial crack shapes and propagation criteria, is conducted. The results obtained in the benchmark study show that the crack paths from X-FEM are similar to the experimental ones. The accuracy of the strain energy release rate computation in a heterogeneous material is also evaluated using a finite difference approach. Planar and non-planar 3D crack growth simulations are presented to demonstrate the robustness and the versatility of the method utilized. Finally, this work contributes to the better understanding of crack propagation behaviour in AGR graphite bricks and so contributes to the extension of the AGR plants’ lifetimes in the UK by reducing uncertainties.
Authors and Affiliations
Thi Tuyet Vo, Philippe Martinuzzi, Van Tran, Neil McLachlan, Alan Steer
Keywords
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- EP ID EP148855
- DOI 10.3221/IGF-ESIS.34.25
- Views 56
- Downloads 0
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