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- 2010 (5) (entfernen)
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Referierte Publikation
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Schlagworte
- FITNET (4)
- SINTAP (4)
- Bruchmechanische Bauteilbewertung (2)
- EPRI method (1)
- EPRI-Methode (1)
- FKM-Richtlinie (1)
- FORM (1)
- FORM/SORM (1)
- Flaw assessment (1)
- Grenzlast (1)
Eingeladener Vortrag
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The net section limit load FY is a key input parameter for the accuracy of any
elastic-plastic flaw assessment procedure of the R6 type. Unfortunately available limit load
solutions are of variable quality since they have been obtained over decades by different
methods. As a consequence the results of the fracture analyses such as the critical load or
crack size are limited in their accuracy and are often significantly conservative. A further
problem is that common limit load solutions based on ligament yielding are inadequate in a
number of cases even for through crack configurations and should be replaced by some
kind of local yielding solutions. In the present paper a simple and straightforward reference
load definition is proposed instead of the limit load which strictly corresponds to a ligament
yielding parameter Lr = 1 in the R6 Routine and similar approaches such as SINTAP and
FITNET. This can be determined by finite element simulation for any geometry. In addition to
a previous study on thin wall notched plates the method is applied to plates containing
shallow semi-elliptical surface cracks. The results demonstrate that the approach provides a
suitable extension and improvement of the existing methods.