Uncoupled and coupled simulations of blast-loaded thin steel plates with various types of slits by EUROPLEXUS
This report presents some EUROPLEXUS simulations of thin steel plates with various types of pre-formed slits that have been tested in the SIMLab Shock Tube Facility (SSTF) at the Norwegian University of Science and Technology (NTNU) in Trondheim, Norway. The SSTF is able to generate a clean and repeatable blast-like pressure loading without resorting to the use of explosives.
The simulations presented here concern blast-like loading (in the SSTF shock tube) of thin steel plates with pre-formed X-shaped slits. The presence of these initial defects triggers, in a clean and repeatable way, the formation and propagation of cracks, eventually leading to complete failure of the plate (for sufficiently high firing pressures). The numerical simulation strategy is described in detail.
Similar plates with +-shaped slits and equivalent plates both full, i.e. without defects or openings, and with pre-formed
holes corresponding to the (fully opened) slit petals should also be simulated numerically as limiting cases, in order to investigate the effect of Fluid-Structure Interaction (FSI) on the behavior of the slitted plates, and in particular on the formation and propagation of cracks from the slit ends.
However, performing the full set of simulations is a formidable task, and the mentioned additional test cases will be run subsequently and will be described in a separate forthcoming report.
CASADEI Folco;
VALSAMOS Georgios;
LARCHER Martin;
AUNE Vegard;
2025-10-21
Publications Office of the European Union
JRC143270
978-92-68-32181-2 (online),
1831-9424 (online),
EUR 40475,
OP KJ-01-25-501-EN-N (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC143270,
10.2760/0859891 (online),
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