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Theoretical Calculation of CTOD Using a Dugdale Model Including Strain Hardening for Surface Cracks

  • C. Mattheck
  • F. Görner
Conference paper

Abstract

A generalized Dugdale model is used to predict ligament yielding and ligament rupture of semi-elliptical surface cracks. Strain hardening effects are regarded approximately. The weight function method is used to calculate the stress intensity factors due to the plastic stresses acting in the yield zone.

The CTOD is calculated at the deepest point of the semi-elliptical surface crack. Good agreement with experiments is shown.

Keywords

Stress Intensity Factor Plastic Zone Crack Mouth Opening Displacement Yield Zone Plastic Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1986

Authors and Affiliations

  • C. Mattheck
    • 1
  • F. Görner
    • 1
  1. 1.Institut für Reaktorbauelemente, Arbeitsgruppe Zuverlässigkeit und Schadenskunde im MaschinenbauKernforschungszentrum KarlsruheKarlsruheW-Germany

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