Simple criterion for predicting fatigue life under combined bending and torsion loading
Multiaxial fatigue is a challenging problem and, consequently, a number of methods has been developed to aid in design of components and assemblies. Following the complexity of the problem, these approaches are often elaborate and it is difficult to use them for simple loading cases. In this paper,...
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Language: | English |
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Gruppo Italiano Frattura
2017-06-01
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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/1872 |
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author | K. Slámecka J. Pokluda |
author_facet | K. Slámecka J. Pokluda |
author_sort | K. Slámecka |
collection | DOAJ |
description | Multiaxial fatigue is a challenging problem and, consequently, a number of methods has been developed to aid in design of components and assemblies. Following the complexity of the problem, these approaches are often elaborate and it is difficult to use them for simple loading cases. In this paper, an empirical approach for constant amplitude, proportional axial and torsion loading is introduced to serve as a basic engineering tool for estimating fatigue life of rotational structural parts. The criterion relies on a quadratic equivalent-stress formula and requires one constant parameter to be determined from experiments. The comparison with similar classical stressbased approaches using data on diverse materials (several steels, aluminium alloy, and nickel base superalloy) reveals very good agreement with experimental data. |
format | Article |
id | doaj-art-79b71ab3c1554b169dd9501e59d98820 |
institution | Kabale University |
issn | 1971-8993 |
language | English |
publishDate | 2017-06-01 |
publisher | Gruppo Italiano Frattura |
record_format | Article |
series | Fracture and Structural Integrity |
spelling | doaj-art-79b71ab3c1554b169dd9501e59d988202025-01-03T01:05:20ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-06-011141Simple criterion for predicting fatigue life under combined bending and torsion loadingK. SlámeckaJ. PokludaMultiaxial fatigue is a challenging problem and, consequently, a number of methods has been developed to aid in design of components and assemblies. Following the complexity of the problem, these approaches are often elaborate and it is difficult to use them for simple loading cases. In this paper, an empirical approach for constant amplitude, proportional axial and torsion loading is introduced to serve as a basic engineering tool for estimating fatigue life of rotational structural parts. The criterion relies on a quadratic equivalent-stress formula and requires one constant parameter to be determined from experiments. The comparison with similar classical stressbased approaches using data on diverse materials (several steels, aluminium alloy, and nickel base superalloy) reveals very good agreement with experimental data.https://212.237.37.202/index.php/fis/article/view/1872Multiaxial fatigueLife predictionEquivalent stress |
spellingShingle | K. Slámecka J. Pokluda Simple criterion for predicting fatigue life under combined bending and torsion loading Fracture and Structural Integrity Multiaxial fatigue Life prediction Equivalent stress |
title | Simple criterion for predicting fatigue life under combined bending and torsion loading |
title_full | Simple criterion for predicting fatigue life under combined bending and torsion loading |
title_fullStr | Simple criterion for predicting fatigue life under combined bending and torsion loading |
title_full_unstemmed | Simple criterion for predicting fatigue life under combined bending and torsion loading |
title_short | Simple criterion for predicting fatigue life under combined bending and torsion loading |
title_sort | simple criterion for predicting fatigue life under combined bending and torsion loading |
topic | Multiaxial fatigue Life prediction Equivalent stress |
url | https://212.237.37.202/index.php/fis/article/view/1872 |
work_keys_str_mv | AT kslamecka simplecriterionforpredictingfatiguelifeundercombinedbendingandtorsionloading AT jpokluda simplecriterionforpredictingfatiguelifeundercombinedbendingandtorsionloading |