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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Main Authors: K. Slámecka, J. Pokluda
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2017-06-01
Series:Fracture and Structural Integrity
Subjects:
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.
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institution Kabale University
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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