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A New Endochronic Elasto-Plasticity Approach for Fatigue Crack Growth

  • O. Watanabe
  • S. N. Atluri

Summary

A new endochnonic elasto-plasticity approach to analyze fatigue crack growth under general spectrum loading is presented. The endochronic theory incorporated in the present analysis can express accurately plastic strains under cyclic loading. A thin rectangular plate with a central crack and under uniform stresses, in a direction normal to the crack-axis at the edge of the plate is studied. Pure mode I for zero-to-tension cyclic loading is considered. Stress and strain singularities, when the fatigue crack tip passes by, are presented and discussed.

Keywords

Fatigue Crack Fatigue Crack Growth Crack Closure Surface Translation Thin Rectangular Plate 
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References

  1. 1.
    Valanis, K.C.: Fundamental Consequence of a New Intrinsic Time Measure-Plasticity as a Limit of the Endochronic Theory. Arch. Mech. 32–2 (1980) 171–191.MathSciNetMATHGoogle Scholar
  2. 2.
    Watanabe, O.; Atluri, S.N.: Constitutive Modeling of Cyclic Plasticity and Creep, Using an Internal Time Concept. Int. J. Plasticity (1984),(in press)Google Scholar
  3. 3.
    Watanabe, O.; Atluri, S.N.: A New Endochronic Approach to Computational Elasto-Plasticity: Example of a Cyclically Loaded Cracked Plate. J. Appl. Mech. 52 (1985) 857–864.ADSMATHCrossRefGoogle Scholar
  4. 4.
    Nakagaki, M.; Atluri, S.N.: Elatic-Plastic Analysis of Fatigue Crack Closure in Modes I and II. AIAA J. 18–9 (1980) 1110–1117.ADSCrossRefGoogle Scholar

Copyright information

© Springer Japan 1986

Authors and Affiliations

  • O. Watanabe
    • 1
  • S. N. Atluri
    • 2
  1. 1.Institute of Engineering MechanicsUniversity of TsukubaSakura, Ibaraki, 305Japan
  2. 2.Center for the Advancement of Computational Mechanics, School of Civil EngineeringGeorgia Institute of TechnologyAtlantaUSA

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