Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel
Nowadays lifetime calculation in the high cycle fatigue region is commonly based on S/N curves which are modified by different influences to ensure accurate results. Especially the application of these models is important when small components with complex stress distributions are used. The influenc...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2017-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://212.237.37.202/index.php/fis/article/view/1921 |
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| author | Igor Miloševic Gerhard Winter Florian Grün Martin Kober |
| author_facet | Igor Miloševic Gerhard Winter Florian Grün Martin Kober |
| author_sort | Igor Miloševic |
| collection | DOAJ |
| description | Nowadays lifetime calculation in the high cycle fatigue region is commonly based on S/N curves which are modified by different influences to ensure accurate results. Especially the application of these models is important when small components with complex stress distributions are used. The influence of the stress distribution was considered by the stress gradient approach which is implemented in the lifetime tool FEMFAT. Specimens with diameters of D4mm and D7.5mm were used to examine the effect of the calculation modified by the stress gradient. On the one hand regarding different types of this approach it can be shown that the results fit very well compared to the testing results but on the other hand a big difference was observed when the gradient increases by smaller specimen sizes. |
| format | Article |
| id | doaj-art-840e372637134f19bef3026ee21dcf92 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-840e372637134f19bef3026ee21dcf922025-01-03T00:40:00ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-09-011142Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steelIgor Miloševic0Gerhard Winter1Florian Grün2Martin Kober3Montanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, AustriaMontanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, AustriaMontanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, AustriaLEC GmbH, Inffeldgasse 19/11, 8010 Graz, AustriaNowadays lifetime calculation in the high cycle fatigue region is commonly based on S/N curves which are modified by different influences to ensure accurate results. Especially the application of these models is important when small components with complex stress distributions are used. The influence of the stress distribution was considered by the stress gradient approach which is implemented in the lifetime tool FEMFAT. Specimens with diameters of D4mm and D7.5mm were used to examine the effect of the calculation modified by the stress gradient. On the one hand regarding different types of this approach it can be shown that the results fit very well compared to the testing results but on the other hand a big difference was observed when the gradient increases by smaller specimen sizes.https://212.237.37.202/index.php/fis/article/view/1921High cycle fatiguestress gradient approachlifetime calculationstress based approachesmartensitic high strength steel |
| spellingShingle | Igor Miloševic Gerhard Winter Florian Grün Martin Kober Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel Fracture and Structural Integrity High cycle fatigue stress gradient approach lifetime calculation stress based approaches martensitic high strength steel |
| title | Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel |
| title_full | Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel |
| title_fullStr | Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel |
| title_full_unstemmed | Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel |
| title_short | Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel |
| title_sort | influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel |
| topic | High cycle fatigue stress gradient approach lifetime calculation stress based approaches martensitic high strength steel |
| url | https://212.237.37.202/index.php/fis/article/view/1921 |
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