LS-DYNA geometry for the DRDC experiment.
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Transcript of LS-DYNA geometry for the DRDC experiment.
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LS-DYNA geometry for the DRDC LS-DYNA geometry for the DRDC experiment.experiment.
*Test performed by Defence R&D Canada, Williams et. Al.
SPH C4 Charge5 cm DOB8 cm thick
12.5 cm radius6.2 kg
10 metric ton ring to simulate vehicle mass
Steel Support Frame
Al 5083 plate3.175 cm thick
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SPH simulation of DRDC SPH simulation of DRDC experiment.experiment.
Measured displacements: 30.0 cm center, -5.0 cm at edge.
Z-disp (cm)
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ALE simulation of DRDC ALE simulation of DRDC experiment.experiment.
Soil Contours
AVI
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DRDC plate deformation calculated from the LS-DRDC plate deformation calculated from the LS-DYNA SPH simulation.DYNA SPH simulation.
Measured displacements: 30.0 cm center, -5.0 cm at edge.
Z-disp (cm)
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DRDC plate deformation calculated from the LS-DRDC plate deformation calculated from the LS-DYNA ALE simulation.DYNA ALE simulation.
~25 ± 2cm, depending on soil compaction compared to 30 cm measured.
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Model geometry for the dynamic shell buckling Model geometry for the dynamic shell buckling airblast analysis.airblast analysis.
Planar pressure
load
ALE air
Aluminum shell(tied to plugs)
Steel plugs(constrained translation)
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Air Blast Analysis ResultsAir Blast Analysis Results
Test* Calculation*Photo from Lindberg and Florence, “Dynamic Pulse Buckling,” 1987
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Model geometry for vehicle blast simulation.Model geometry for vehicle blast simulation.
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Contours of pressure during blast-vehicle interaction.
(a) t = 0.1 ms(b) t = 1.1 ms
(c) t = 4.4 ms
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Damage to vehicle at 13.0 ms. Damage to vehicle at 13.0 ms.
Vehicle Damage