OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 1974 · 32 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsStructural AnalysisStructural MaterialsCreep BehaviorCreep DeformationFatiguePlastic DeformationPlasticityStrain HardeningCreep Constitutive EquationsCyclic HardeningCyclic PlasticityCyclic StrainInelastic DeformationLow-cycle FatigueMultiaxial Stress StatesNonlinear Viscoelasticity
An analysis is made of the inelastic deformation of structural materials under cyclic creep conditions such as loading, unloading, reloading, cyclic creep, cyclic relaxation, and low-cycle fatigue with and without hold times under uniaxial and multiaxial states of stress. Constitutive equations such as linear and nonlinear viscoelasticity, plasticity, creep theory and equation of state are examined. It is concluded that an accurate cycle-by-cycle analysis for ratchetting and creep-fatigue interaction is not now possible. For cyclic strain hardening materials, such as stainless steel but not Cr--Mo--V steels, a conservative prediction can be made. 26 figures, 132 references. (DLC)