Title: Numerical Simulation of the One Meter - Drop Test on a Bar for the Castor Cask - Advanced and Final Analyses
Authors: JAKSIC NIKOLANILSSON KARL-FREDRIK
Publisher: OPOCE
Publication Year: 2007
JRC N°: JRC40778
ISSN: 1018-5593
Other Identifiers: EUR 22470 EN/2
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC40778
Type: EUR - Scientific and Technical Research Reports
Abstract: The report presents the further numerical analysis of two one meter drop tests of a single ductile cast iron cask on a steel bar. The cask comes from the CASTOR family with machined cooling fins in a region where impact occurs. In the first test, the impact is on the cask¿s cooling fins whereas in the second test the impact is in an area where the fins have been locally machined away. The numerical analysis is based on an explicit dynamic analysis using the commercial finite element code ABAQUS extended with Python scripts to allow a parametric description of the problem. The report describes two sets of analyses. First a comparison to a model used in [1] was carried out together with advanced parameter variation simulations (advanced sensitivity analyses) and then the responses of the basic model are compared with the experimental results provided by GNS. The overall behavior of the model is qualitatively very similar to what was observed during the experiments. The quantitative differences between experimental and numerical responses are generally within 10% to 15% with some exceptions. A longer impact duration, (between 3 ms to 5 ms) when the cask is dropped on the fins in comparison to the flat target, is observed in both the analysis and the test. The advanced sensitivity analysis was performed to study the influence of parameters either identified in [1] as influential or not yet tested there. Based on results, recommendations for an final set of parameters values are given.
JRC Institute:Institute for Energy and Transport

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