Numerical validation of a calibrated ship steel material model using blast panel tests
conference paper
Numerical validation of close-in blast panel deformation and failure is reported using simply supported panels (5 mm in thickness). The modelling approach uses a direct coupling between Apollo and LS-DYNA for the loading and response, respectively. The calibration of the material model (plasticity and failure) is based on the Shear modified Rice and Tracey model using both tensile and punch tests. Simulation results of non-failing panels show an excellent agreement with experiments in terms of permanent plastic deformation across the plate in time. This excellent agreement is observed from the least to the most severe non-failing cases. For the failing panels the
failure pattern is very well reproduced by the simulations (plug formation, cracks initiating from the plug hole followed by petaling). It is concluded that the level of agreement is well within expectations which provides high confidence in this material model and modelling approach.
failure pattern is very well reproduced by the simulations (plug formation, cracks initiating from the plug hole followed by petaling). It is concluded that the level of agreement is well within expectations which provides high confidence in this material model and modelling approach.
TNO Identifier
991986
Publisher
TNO
Source title
26th International Symposium on Military Aspects of Blast and Shock MABS, Wollongong, Australia, 3-8 December 2023
Collation
15 p.
Place of publication
Delft
Pages
Paper 50
Files
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