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On Scaled Normal Stresses in Multiaxial Fatigue and Their Exemplary Application to Ductile Cast Iron

Wächter, Michael ; Linn, Alexander ; Wuthenow, Ralf ; Esderts, Alfons ; Gaier, Christian ; Kraft, Jan ; Fällgren, Carl ; Vormwald, Michael (2022)
On Scaled Normal Stresses in Multiaxial Fatigue and Their Exemplary Application to Ductile Cast Iron.
In: Applied Mechanics, 2022, 3 (1)
doi: 10.26083/tuprints-00022187
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: On Scaled Normal Stresses in Multiaxial Fatigue and Their Exemplary Application to Ductile Cast Iron
Language: English
Date: 5 September 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Applied Mechanics
Volume of the journal: 3
Issue Number: 1
DOI: 10.26083/tuprints-00022187
Corresponding Links:
Origin: Secondary publication DeepGreen

The approaches used to calculate the fatigue life of components must inevitably consider multiaxial stresses. Compared to proportional loading, the calculation of nonproportional loading is particularly challenging, especially since different materials exhibit the effects of nonproportional hardening and shifts in fatigue life. In this paper, the critical plane approach of scaled normal stresses, first proposed by Gaier and Dannbauer and later published in a modified version by Riess et al., is investigated in detail. It is shown that, on the one hand, compatibilities exist or can be established with known proportional strength criteria that can account for the varying ductility of different materials. Furthermore, it is demonstrated that the scaled normal stress approach can be formulated in such a way that different strength criteria can be used therein. As an example, the generally formulated approach for scaled normal stresses is applied to test results from ductile cast iron material EN-GJS-500-14. Different correction factors accounting for nonproportional loading are investigated. Through appropriate parameterization of one of the studied corrections, proportional and nonproportional test results were observed to fall within one common scatter band.

Uncontrolled Keywords: multiaxial fatigue, critical plane, scaled normal stresses, proportional loading, nonproportional loading, ductile cast iron
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-221876
Additional Information:

This article belongs to the Topic Fatigue and Fracture Assessment of Structural Components and Materials

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Material Mechanics
Date Deposited: 05 Sep 2022 13:17
Last Modified: 14 Nov 2023 19:05
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22187
PPN: 498939774
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