Effect of damage in the material on the stress-strain state in the vicinity of the crack tip in creep

@article{Astafev1992EffectOD,
  title={Effect of damage in the material on the stress-strain state in the vicinity of the crack tip in creep},
  author={V. I. Astaf'ev and T. V. Grigorova and Vladimir A. Pastukhov},
  journal={Soviet materials science : a transl. of Fiziko-khimicheskaya mekhanika materialov / Academy of Sciences of the Ukrainian SSR},
  year={1992},
  volume={28},
  pages={1-6}
}
  • V. I. Astaf'ev, T. Grigorova, V. Pastukhov
  • Published 1992
  • Materials Science
  • Soviet materials science : a transl. of Fiziko-khimicheskaya mekhanika materialov / Academy of Sciences of the Ukrainian SSR
ConclusionsThe solution of the simulation problem of the growth an antiplanar shear crack in the coupled formulation for the case of creep with damage shows the following.1.The singular stress field (equivalent stresses τa/ψ are limited and stresses τa and continuityψ linearly decrease to zero at the crack tip), typical of crack theory, does not form at the crack tip. This corresponds to the results of finite-element solutions for separation cracks [12, 18].2.The crack surfaces (ϕ = ±π which… 
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The creep rupture of circumferentially notched, circular tension bars which are subjected to constant load for long periods at constant temperature is studied both experimentally and by using a
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The asymptotic stress and strain fields near the tip of a slowly growing crack are derived for elastic-nonlinear viscous materials, which deform in tension according to the law %