Advances in the application of non-local damage models in the simulation of ductile crack-extension
- Local damage models usually have the disadvantage that results are strongly mesh dependent. The reason is that the type of the underlying partial differential equations changes under quasi-static conditions from elliptic to hyperbolic. Non-local damage models do not exhibit such behaviour under certain conditions. The usage of such non-local damage models in finite element analyses opens the possibility for preserving the ellipticity of the partial differential equations and thus avoiding mesh dependence of numerically obtained results. The loss of ellipticity for local models and its preservation for non-local models are demonstrated for a wide variety of examples enclosing ductile damage. In the present investigation, the non-local damage model is applied to the simulation of ductile crack extension in fracture mechanics specimens. The type of the underlying differential equations is permanently analysed and controlled.
MetadatenAutor*innen: | Dietmar Klingbeil, B. Svendsen, F. Reusch |
---|
Dokumenttyp: | Beitrag zu einem Tagungsband |
---|
Veröffentlichungsform: | Graue Literatur |
---|
Sprache: | Englisch |
---|
Titel des übergeordneten Werkes (Englisch): | Advanced fracture mechanics for life and safety assessments |
---|
Jahr der Erstveröffentlichung: | 2004 |
---|
Verlagsort: | Stockholm |
---|
Erste Seite: | 1 |
---|
Letzte Seite: | 8(?) |
---|
Freie Schlagwörter: | Bruchmechanik; Duktile Schädigung; Nicht-lokal |
---|
Veranstaltung: | 15th European Conference on Fracture (ECF-15) |
---|
Veranstaltungsort: | Stockholm, Sweden |
---|
Beginndatum der Veranstaltung: | 2004-08-11 |
---|
Enddatum der Veranstaltung: | 2004-08-13 |
---|
Verfügbarkeit des Dokuments: | Weder Datei noch physisches Exemplar vorhanden ("No Access") |
---|
Datum der Freischaltung: | 19.02.2016 |
---|
Referierte Publikation: | Nein |
---|