2001 · 15 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsMechanical Property SimulationShear StrengthSolid Mechanics ApplicationsStrength Of MaterialsStrength PropertiesStrengthening MechanismsDynamic StrengthDynamic Strength TestingShear Yield StrengthStatic StrengthToughness SimulationYield StrengthYield Strength MeasurementYield Strength Prediction
Abstract : Yield strength obtained from quasi-static strength data for rolled homogeneous armor (RHA) was combined with dynamic strength data for 2-in (51-mm) RHA to generate Johnson-Cook parameters for 2-in RHA. One parameter was fixed based on the quasi-static strength data, and a least-squares method was used to fit the others individually. The fit was tested with CHT by simulating the penetration of stacks of 2.5-in-thick (63.5-mm) RHA plates (the closest available experimental data). Parameter analysis and comparison of the simulations to experiment substantiated the approach.