High strain rate micro-compression for crystal plasticity constitutive law parameters identification
Simon Breumier, Sergio Sao‐Joao, Aurélien Villani, Martin Lévesque, Guillaume Kermouche
Abstract
CPFE viscoplastic coefficients were uniquely identified using microcompression tests up to 100/s in the [100] orientation The problem well-conditioning result from strain rate localization in the shear bands Microcompression tests revealed an orientation dependent strain-rate sensitivity
Topics & Concepts
Materials scienceIdentifiabilityStrain rateSensitivity (control systems)Hessian matrixPlasticityAnisotropyStrain (injury)Constitutive equationComposite materialFinite element methodStructural engineeringMathematicsApplied mathematicsOpticsStatisticsElectronic engineeringEngineeringMedicinePhysicsInternal medicineHigh-Velocity Impact and Material BehaviorMetal and Thin Film MechanicsSurface Treatment and Residual Stress