Abstract
The ways to treat Continuum Damage Mechanics in low cycle fatigue are following: (i) the fully coupled analysis and (ii) the post-processing analysis.With a view to treating the subject of the paper presented, the biaxial testing steel specimen was worked to exhibit stress concentrations, localized plasticity, and damage at notches, being chosen among examples of multiaxial and multilevel fatigue loadings.Concurrently, the failure conditions are determined after a single elastic reference computation by using the cyclic strain energy density method ensued by the time integration of the unified damage law. Characteristic effects of high cycle fatigue are predicted by the unified damage law within two-scale damage model; in an exemplary fashion, for a plate subject to a biaxial fatigue loading, the in-plane stresses σ1 and σ2 vary proportionally between (−σ1max and +σ1max) and (−σ2max and +σ2max).
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