The constitutive equation based on continuum damage mechanics is applied to the computational material testing of steel specimens. The material constants for the elasto-viscoplastic deformation and the damage evolution are determined by the test results for unaxial stress-strain behaviors and SN curves in fatigue. The identified constitutive equation is used in the computational material testing for the dynamic tensile behavior of pre-fatigued and pre-strained steel specimens. The effects of pre-fatigue and pre-strains on the tensile strength, breaking strains and absorbed energy are quantitatively well evaluated by the computational testing.
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