1 Modeling Fatigue Life of Structural Alloys Under Block Asymmetric Loading
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Fig. 1.5 Computed and experimental dependencies of changes in the average deformations
depending on the load number
cycles, and Fig. 1.6 depicts the deformation curves, constructed in the strain path on
the basis of the numerical results.
It is evident that the experimental and modeled representations for describing
the effect of ratcheting of the plastic hysteresis loop under uniaxial and multi-axial,
proportional and non-proportional regimes of soft cycling loading agree reasonably
well both qualitatively and, reliably enough for engineering purposes, quantitatively,
which testifies to the adequacy of the modeling the process of non-stationary asymmetric cyclic loading and determining the material parameters of the constitutive
equations of plasticity.
Fig. 1.6 Computed deformation trajectories in the deformation space
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Fig. 1.5 Computed and experimental dependencies of changes in the average deformations
depending on the load number
cycles, and Fig. 1.6 depicts the deformation curves, constructed in the strain path on
the basis of the numerical results.
It is evident that the experimental and modeled representations for describing
the effect of ratcheting of the plastic hysteresis loop under uniaxial and multi-axial,
proportional and non-proportional regimes of soft cycling loading agree reasonably
well both qualitatively and, reliably enough for engineering purposes, quantitatively,
which testifies to the adequacy of the modeling the process of non-stationary asymmetric cyclic loading and determining the material parameters of the constitutive
equations of plasticity.
Fig. 1.6 Computed deformation trajectories in the deformation space