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Approximation of the crack driving force for cracks at notches under static and cyclic loading
- The work deals with the efficient calculation of the elastic-plastic crack driving force (J-integral for monotonic loading andΔJ-integral under cyclic loading) for short cracks at notches as essential parameter for the reliable static and fatigue assessment of notched structures. The J- or ΔJ-integral is calculated based on analytical solutions for stress intensity factors, estimated by means of well-known weight function solutions in the case of cracks under power-law stress distributions. A plasticity-correction function is applied to the stress intensity factors to obtain the final expression of the crack driving force. The comparison between analytical solutions and finite element calculations in case of cracks at the weld toe in welded joints shows good agreement.
Autor*innen: | Mauro Madia |
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Koautor*innen: | D. Tchoffo Ngoula, Uwe Zerbst, T. Beier |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2017 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Crack driving force; Fracture mechanics; Notches; Structural integrity |
Veranstaltung: | 2nd International Conference on Structural Integrity |
Veranstaltungsort: | Funchal, Madeira, Portugal |
Beginndatum der Veranstaltung: | 04.09.2017 |
Enddatum der Veranstaltung: | 07.09.2017 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 18.10.2017 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |