Title: Numerical Simulation of Plastic Collapse of Copper-cast Iron Canister for Spent Nuclear Fuel
Authors: MARTIN OliverNILSSON Karl-FredrikJAKSIC Nikola
Citation: ENGINEERING FAILURE ANALYSIS vol. 16 p. 225-241
Publication Year: 2009
JRC N°: JRC48407
ISSN: 1350-6307
URI: http://www.elsevier.com/locate/engfailanal
DOI: 10.1016/j.engfailanal.2008.03.005
Type: Articles in periodicals and books
Abstract: This paper describes a finite element simulation of a spent fuel canister for geological disposal loaded in iso-static pressure until plastic collapse. The canister consists of a copper overpack and a ductile cast iron insert with steel cassettes where the spent fuel is placed. The highly non-linear finite element analysis is based on the explicit formulation and includes large deformations, non-linear material behaviour and contact between the canister components. The analysis includes comparison between two- and three-dimensional models and assessment of the different geometrical features such as corner radius of the cassette, cassette offset, different bonding/debonding conditions between insert and steel cassette. The analysis shows that the bonding cassette/insert has a large impact on the collapse load. Two large-scale mock-ups test that had been performed earlier are also simulated by the developed finite element models. There is a very good agreement between measured and computed deformations vs. applied load and collapse load.
JRC Directorate:Energy, Transport and Climate

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