Numerical Simulation of the One Meter - Drop Test on a Bar for the Castor Cask - Advanced and Final Analyses
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.
JAKSIC Nikola;
NILSSON Karl-Fredrik;
2008-02-07
OPOCE
JRC40778
1018-5593,
EUR 22470 EN/2,
https://publications.jrc.ec.europa.eu/repository/handle/JRC40778,
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