Constitutive Modeling under High Temperature and High Strain Rate Loading Conditions
The objective of the present work was to develop a temperaturedependent high strain-rate constitutive model for C1008 steel. We obtained data at room and elevated temperatures from tensile one-dimensional stress loading with a split Hopkinson bar (SHB), and for one-dimensional strain loading with plate-impact experiments. The state variable based visco-plastic constitutive model developed by Bodner-Partom [l] (B-P model) was selected for describing the material behavior. Since the model is formulated for three-dimensional stresses and strains, material response to a broad range of load histories can be calculated. The B-P model parameters were evaluated from the test data. The evaluation technique included a computational approach.
KeywordsHigh Strain Rate True Strain C1008 Steel Finite Difference Code Plate Impact Test
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