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.
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© 1986 Springer-Verlag Berlin, Heidelberg
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Mattheck, C., Görner, F. (1986). Theoretical Calculation of CTOD Using a Dugdale Model Including Strain Hardening for Surface Cracks. In: Schwalbe, K.H. (eds) The Crack Tip Opening Displacement in Elastic-Plastic Fracture Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82818-8_3
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DOI: https://doi.org/10.1007/978-3-642-82818-8_3
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