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A shakedown model for high‐cycle fatigue
Author(s) -
CRUZ I.,
ZOUAIN N.
Publication year - 2003
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1046/j.1460-2695.2003.00631.x
Subject(s) - shakedown , internal stress , solid mechanics , structural engineering , mesoscopic physics , mechanics , mathematics , materials science , engineering , physics , thermodynamics , finite element method , quantum mechanics , composite material
The phenomenological description of the elastic accommodation occurring in a representative volume is implemented in a high‐cycle fatigue criterion. A model for fatigue is directly formulated in the usual continuum mechanics elastic formulation; there, internal variables are introduced to represent the changes in the mesoscopic level of the material. These internal variables do not interact with the macroscopic elastic analysis. The condition for infinite life is the existence of internal variables, independent of time, and rendering admissible stress variations with respect to a fatigue admissibility criterion. The model is applied to experimental data and compared to other criteria.