Interaction of shear and normal stresses in multiaxial fatigue damage analysis
Due to the abundance of engineering components subjected to complex multiaxial loading histories, being able to accurately estimate fatigue damage under multiaxial stress states is a fundamental step in many fatigue life analyses. In this respect, the Fatemi-Socie (FS) critical plane damage paramete...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2016-06-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1733 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850056068657315840 |
|---|---|
| author | Nicholas R. Gates Ali Fatemi |
| author_facet | Nicholas R. Gates Ali Fatemi |
| author_sort | Nicholas R. Gates |
| collection | DOAJ |
| description | Due to the abundance of engineering components subjected to complex multiaxial loading histories, being able to accurately estimate fatigue damage under multiaxial stress states is a fundamental step in many fatigue life analyses. In this respect, the Fatemi-Socie (FS) critical plane damage parameter has been shown to provide excellent fatigue life correlations for a variety of materials and loading conditions. In this parameter shear strain amplitude has a primary influence on fatigue damage and the maximum normal stress on the maximum shear plane has a secondary, but important, influence. In this parameter, the maximum normal stress is normalized by the material yield strength in order to preserve the unitless feature of strain. However, in examining some literature data it was found that in certain situations the FS parameter can result in better fatigue life predictions if the maximum normal stress is normalized by shear stress range instead. These data include uniaxial loadings with large tensile mean stress, and some non-proportional axial-torsion load paths with different normal-shear stress interactions. This modification to the FS parameter was investigated by using fatigue data from literature for 7075-T651 aluminum alloy, as well as additional data from 2024-T3 aluminum alloy fatigue tests performed in this study. |
| format | Article |
| id | doaj-art-ceb679d790bf43eca1474e9625da7edc |
| institution | DOAJ |
| issn | 1971-8993 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-ceb679d790bf43eca1474e9625da7edc2025-08-20T02:51:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932016-06-011037Interaction of shear and normal stresses in multiaxial fatigue damage analysisNicholas R. GatesAli FatemiDue to the abundance of engineering components subjected to complex multiaxial loading histories, being able to accurately estimate fatigue damage under multiaxial stress states is a fundamental step in many fatigue life analyses. In this respect, the Fatemi-Socie (FS) critical plane damage parameter has been shown to provide excellent fatigue life correlations for a variety of materials and loading conditions. In this parameter shear strain amplitude has a primary influence on fatigue damage and the maximum normal stress on the maximum shear plane has a secondary, but important, influence. In this parameter, the maximum normal stress is normalized by the material yield strength in order to preserve the unitless feature of strain. However, in examining some literature data it was found that in certain situations the FS parameter can result in better fatigue life predictions if the maximum normal stress is normalized by shear stress range instead. These data include uniaxial loadings with large tensile mean stress, and some non-proportional axial-torsion load paths with different normal-shear stress interactions. This modification to the FS parameter was investigated by using fatigue data from literature for 7075-T651 aluminum alloy, as well as additional data from 2024-T3 aluminum alloy fatigue tests performed in this study.https://www.fracturae.com/index.php/fis/article/view/1733Multiaxial FatigueCritical PlaneMean StressLoad Path Interaction |
| spellingShingle | Nicholas R. Gates Ali Fatemi Interaction of shear and normal stresses in multiaxial fatigue damage analysis Fracture and Structural Integrity Multiaxial Fatigue Critical Plane Mean Stress Load Path Interaction |
| title | Interaction of shear and normal stresses in multiaxial fatigue damage analysis |
| title_full | Interaction of shear and normal stresses in multiaxial fatigue damage analysis |
| title_fullStr | Interaction of shear and normal stresses in multiaxial fatigue damage analysis |
| title_full_unstemmed | Interaction of shear and normal stresses in multiaxial fatigue damage analysis |
| title_short | Interaction of shear and normal stresses in multiaxial fatigue damage analysis |
| title_sort | interaction of shear and normal stresses in multiaxial fatigue damage analysis |
| topic | Multiaxial Fatigue Critical Plane Mean Stress Load Path Interaction |
| url | https://www.fracturae.com/index.php/fis/article/view/1733 |
| work_keys_str_mv | AT nicholasrgates interactionofshearandnormalstressesinmultiaxialfatiguedamageanalysis AT alifatemi interactionofshearandnormalstressesinmultiaxialfatiguedamageanalysis |