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FEM study of fatigue crack closure under double slip

Publication ,  Journal Article
Gall, K; Sehitoglu, H; Kadioglu, Y
Published in: Acta Materialia
January 1, 1996

An elastic-plastic finite element analysis of Mode I crack growth and plasticity induced crack closure is presented. The simulation, which models crack tip plasticity using two slip planes, predicts slip patterns experimentally observed in real crystals or grains. The model shows that plasticity induced crack closure will occur when the crack tip plastic zone is smaller than the grain size. Closure levels are found to vary as the crystallographic orientation of the model with respect to the crack line is changed. For some orientations the closure levels are found to be negligible, while in others the levels approach 0.35 of the maximum applied load. Closure levels also vary as the angle between the slip planes is varied. The values span a similar range. The amount of crack closure for any particular crystallographic orientation and/or slip plane configuration is found to be a balance between several variables. Primarily, the closure levels are dictated by the magnitude of the static crack opening displacement and amount of residual plasticity along the crack line. Copyright © 1996 Acta Metallurgica Inc.

Duke Scholars

Published In

Acta Materialia

DOI

ISSN

1359-6454

Publication Date

January 1, 1996

Volume

44

Issue

10

Start / End Page

3955 / 3965

Related Subject Headings

  • Materials
  • 5104 Condensed matter physics
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0204 Condensed Matter Physics
 

Citation

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Gall, K., Sehitoglu, H., & Kadioglu, Y. (1996). FEM study of fatigue crack closure under double slip. Acta Materialia, 44(10), 3955–3965. https://doi.org/10.1016/S1359-6454(96)00049-3
Gall, K., H. Sehitoglu, and Y. Kadioglu. “FEM study of fatigue crack closure under double slip.” Acta Materialia 44, no. 10 (January 1, 1996): 3955–65. https://doi.org/10.1016/S1359-6454(96)00049-3.
Gall K, Sehitoglu H, Kadioglu Y. FEM study of fatigue crack closure under double slip. Acta Materialia. 1996 Jan 1;44(10):3955–65.
Gall, K., et al. “FEM study of fatigue crack closure under double slip.” Acta Materialia, vol. 44, no. 10, Jan. 1996, pp. 3955–65. Scopus, doi:10.1016/S1359-6454(96)00049-3.
Gall K, Sehitoglu H, Kadioglu Y. FEM study of fatigue crack closure under double slip. Acta Materialia. 1996 Jan 1;44(10):3955–3965.
Journal cover image

Published In

Acta Materialia

DOI

ISSN

1359-6454

Publication Date

January 1, 1996

Volume

44

Issue

10

Start / End Page

3955 / 3965

Related Subject Headings

  • Materials
  • 5104 Condensed matter physics
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0204 Condensed Matter Physics