Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Crack Paths Vol. 13, No. 48 (2019)

The effect of creep damage model formulation on crack path prediction

Author and affiliation details
  • Valery Shlyannikov Corresponding author Institute of Power Engineering and Advanced Technologies, FRC Kazan Scientific Center, Russian Academy of Sciences shlyannikov@mail.ru
  • Andrey Tumanov Institute of Power Engineering and Advanced Technologies, FRC Kazan Scientific Center, Russian Academy of Sciences
DOI
10.3221/IGF-ESIS.48.10
Pages
77-86
Published
Published inVol. 13, No. 48 (2019)Go to the issue

Abstract

The stress, strain rate and process zone with respect to the creep-crack growth are analyzed by employing damage-evolution equations. The damage models for the fracture of the process zone are represented using a stress and ductility based formulation. Special attention has been addressed in the present study to the influence of the creep damage model formulation on the on crack path prediction. To evaluate the significance of dominating fracture mechanism a comparison of the cases for pure mode II is considered. It was observed that in the case of stress based model one side of the notch, dominated by tensile stresses, blunts, while the other side, dominated by shear strains, sharpens. In the case of ductility based model, there is a tendency for creep damage to localize only at the blunted part of the notch. This because the highest tensile hydrostatic stress and crack-tip constraint always occur near the blunted part of the notch. In this region, the crack growth direction and general creep damage zone deviate from the initial crack plane. As a result of numerical calculations the consequence of the crack deviation angle values, crack length increments and finally crack path were determined.

Keywords

Article history

  1. ReceivedUntil the next stage: 43 days
  2. Revision requestedUntil the next stage: 2 days
  3. RevisedUntil the next stage: 24 days
  4. AcceptedUntil the next stage: 14 days
  5. Published

How to cite

APA

Shlyannikov, V., & Tumanov, A. (2019). The effect of creep damage model formulation on crack path prediction. Fracture and Structural Integrity, 13(48), 77–86. https://doi.org/10.3221/IGF-ESIS.48.10

IEEE

V. Shlyannikov and A. Tumanov, “The effect of creep damage model formulation on crack path prediction,” Fracture and Structural Integrity, vol. 13, no. 48, pp. 77–86, 2019, doi: 10.3221/IGF-ESIS.48.10.

MLA

Shlyannikov, Valery, and Andrey Tumanov. “The effect of creep damage model formulation on crack path prediction.” Fracture and Structural Integrity, vol. 13, no. 48, 2019, pp. 77–86. https://doi.org/10.3221/IGF-ESIS.48.10.

Chicago

Shlyannikov, Valery, and Andrey Tumanov. 2019. “The effect of creep damage model formulation on crack path prediction.” Fracture and Structural Integrity 13 (48): 77–86. https://doi.org/10.3221/IGF-ESIS.48.10.

Harvard

Shlyannikov, V. and Tumanov, A. (2019) ‘The effect of creep damage model formulation on crack path prediction’, Fracture and Structural Integrity, 13(48), pp. 77–86. doi: 10.3221/IGF-ESIS.48.10.

Vancouver

Shlyannikov V, Tumanov A. The effect of creep damage model formulation on crack path prediction. Fracture and Structural Integrity. 2019;13(48):77-86. doi:10.3221/IGF-ESIS.48.10

BibTeX

@article{shlyannikov2019, author = {Shlyannikov, Valery and Tumanov, Andrey}, title = {The effect of creep damage model formulation on crack path prediction}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {48}, pages = {77--86}, doi = {10.3221/IGF-ESIS.48.10}, url = {https://doi.org/10.3221/IGF-ESIS.48.10}, issn = {1971-8993} }

RIS

TY - JOUR AU - Shlyannikov, Valery AU - Tumanov, Andrey TI - The effect of creep damage model formulation on crack path prediction JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/02/24 VL - 13 IS - 48 SP - 77 EP - 86 DO - 10.3221/IGF-ESIS.48.10 UR - https://doi.org/10.3221/IGF-ESIS.48.10 SN - 1971-8993 ER -

Licence

Copyright © 2019 Valery Shlyannikov, Andrey Tumanov.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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