Lang, Eliane ; Beier, Heinz Thomas ; Vormwald, Michael ; Rudolph, Jürgen (2012)
Numerical Simulations based on Scans and Experimental Data for Low Cycle Fatigue Assessment.
ANSYS Conference & 30th CADFEM User's Meeting. Kassel, Deutschland (24.-26.11.2012)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
The research dealed with in this contribute targets a new approach to enable low cycle fatigue assessment of welded components. The fatigue behavior of weld seams – especially the fatigue relevant influence of geometrical and metallugical notches – is of particular interest in this context. The approach is based on material mechanics and constitutes a combination of experimental findings and numerical simulations in order to consider the particularities of of the fatigue behavior of the weld seam in more detail. Experiments on welded specimens provide the fatigue life and the failure location as well as the stabilized cyclic stress-strain curve as relevant input parameters for the subsequent FE analyses. FE calculation of the specimen determines the fatigue relevant strain at the failure location. Moreover, the FE calculation will be able to indicate the failure location if modeled with the highest precision outputting damage parameters and considering the different material resistances. The proposed model is capable of considering the exact geometry of the weld seam obtained by 3D scanning with very high resolution and the different material strengths due to the weld. The consideration of the principal influences on the fatigue behavior of weld seams paves the way to the application of established damage parameters such as PJ with the future objective to transfer the results also on arbitrary proportional and non-proportional loadings with variable amplitudes.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Lang, Eliane ; Beier, Heinz Thomas ; Vormwald, Michael ; Rudolph, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Numerical Simulations based on Scans and Experimental Data for Low Cycle Fatigue Assessment |
| Sprache: | Englisch |
| Publikationsjahr: | 2012 |
| Veranstaltungstitel: | ANSYS Conference & 30th CADFEM User's Meeting |
| Veranstaltungsort: | Kassel, Deutschland |
| Veranstaltungsdatum: | 24.-26.11.2012 |
| Kurzbeschreibung (Abstract): | The research dealed with in this contribute targets a new approach to enable low cycle fatigue assessment of welded components. The fatigue behavior of weld seams – especially the fatigue relevant influence of geometrical and metallugical notches – is of particular interest in this context. The approach is based on material mechanics and constitutes a combination of experimental findings and numerical simulations in order to consider the particularities of of the fatigue behavior of the weld seam in more detail. Experiments on welded specimens provide the fatigue life and the failure location as well as the stabilized cyclic stress-strain curve as relevant input parameters for the subsequent FE analyses. FE calculation of the specimen determines the fatigue relevant strain at the failure location. Moreover, the FE calculation will be able to indicate the failure location if modeled with the highest precision outputting damage parameters and considering the different material resistances. The proposed model is capable of considering the exact geometry of the weld seam obtained by 3D scanning with very high resolution and the different material strengths due to the weld. The consideration of the principal influences on the fatigue behavior of weld seams paves the way to the application of established damage parameters such as PJ with the future objective to transfer the results also on arbitrary proportional and non-proportional loadings with variable amplitudes. |
| Freie Schlagworte: | Low cycle fatigue behaviour, weld, scan based modelling |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik > Fachgebiet Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften |
| Hinterlegungsdatum: | 02 Jul 2014 12:00 |
| Letzte Änderung: | 05 Feb 2015 17:25 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum