AIAA Journal · 2008 · 15 citations · 14 references
Natural SciencesCivil EngineeringMaterials EngineeringMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsImpact BehaviorImpact MechanicsMechanical Property SimulationStrain Rate EffectsStress-strain BehaviorViscoplastic BehaviorConstitutive Modeling For ImpactHigh-strain-rate BehaviorHigh-strain-rate DeformationHigh-velocity ImpactHypervelocity ImpactsImpact TestingMaterial Constitutive ModelingViscoplastic Deformation
The gouging impact phenomenon which occurs at the Holloman Air Force Base High-Speed Test Track during hypervelocity impact testing is examined further. The material constitutive models for VascoMax 300 and 1080 steel are refined, and extended into the high-strain-rate regime, using results from flyer plate impact experiments. These experiments are simulated using the hydrocode CTH to improve the material strength models at high strain rates. The improved viscoplastic models are then validated by comparing laboratory hypervelocity impact tests to CTH simulations. The final material models are then used in sled/rail impact simulations for the Holloman Air Force Base High-Speed Test Track gouging problem. These full-sled simulations match previous experimental findings extremely well.
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