Fällgren, Carl ; Vormwald, Michael
Hrsg.: Esderts, Alfons ; Werdin, Sven ; Bleicher, Christoph G. H. (2024)
Modification of the Findley damage parameter for fatigue assessment under multiaxial proportional and nonproportional variable amplitude loading.
VAL5. Dresden, Germany (11.06.2024 - 13.06.2024)
doi: 10.48447/VAL5-2024-021
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Fatigue life evaluation of components in engineering structures is crucial for ensuring their long-term reliability and safety. As operational loads can be arbitrary, including multiaxiality and variable amplitudes, fatigue life assessment approaches able to evaluate these are needed. This study presents a modification to the Findley damage parameter for assessing fatigue life under multiaxial variable amplitude loading, including both proportional and nonproportional loading conditions. The Findley damage parameter is adapted to explicitly account for mean stresses at different loading ratios.
The proposed modification integrates the mean stress sensitivity of the materials into the damage parameter. Additionally, the nonproportionality of the loads is taken into account by the nonproportionality factor as proposed by Gaier. A set of fatigue data from component testing under variable amplitude loading is utilised to validate the modified parameter's accuracy. The parameter is used with the critical plane approach and the results are compared to the experimental database.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2024 |
| Herausgeber: | Esderts, Alfons ; Werdin, Sven ; Bleicher, Christoph G. H. |
| Autor(en): | Fällgren, Carl ; Vormwald, Michael |
| Art des Eintrags: | Bibliographie |
| Titel: | Modification of the Findley damage parameter for fatigue assessment under multiaxial proportional and nonproportional variable amplitude loading |
| Sprache: | Englisch |
| Publikationsjahr: | 2024 |
| Ort: | Berlin |
| Verlag: | Deutscher Verband für Materialforschung und -prüfung e.V. (DVM) |
| Buchtitel: | VAL5: Fifth International Conference on Material and Component Performance under Variable Amplitude Loading Proceedings |
| Veranstaltungstitel: | VAL5 |
| Veranstaltungsort: | Dresden, Germany |
| Veranstaltungsdatum: | 11.06.2024 - 13.06.2024 |
| DOI: | 10.48447/VAL5-2024-021 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Fatigue life evaluation of components in engineering structures is crucial for ensuring their long-term reliability and safety. As operational loads can be arbitrary, including multiaxiality and variable amplitudes, fatigue life assessment approaches able to evaluate these are needed. This study presents a modification to the Findley damage parameter for assessing fatigue life under multiaxial variable amplitude loading, including both proportional and nonproportional loading conditions. The Findley damage parameter is adapted to explicitly account for mean stresses at different loading ratios. The proposed modification integrates the mean stress sensitivity of the materials into the damage parameter. Additionally, the nonproportionality of the loads is taken into account by the nonproportionality factor as proposed by Gaier. A set of fatigue data from component testing under variable amplitude loading is utilised to validate the modified parameter's accuracy. The parameter is used with the critical plane approach and the results are compared to the experimental database. |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik > Fachgebiet Werkstoffmechanik |
| Hinterlegungsdatum: | 03 Jul 2024 09:32 |
| Letzte Änderung: | 03 Jul 2024 09:32 |
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