Efficient lifetime estimation techniques for general multiaxial loading

Papuga, Jan; Halama, Radim; Fusek, Martin; Rojíček, Jaroslav; Fojtík, František; Horák, David; Pecha, Marek; Tomčala, Jiří; Čermák, Martin; Hapla, Vaclav; Sojka, Radim; Kružík, Jakub

doi:10.1063/1.4992518

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…To validate the proposed combinations, the experimental set AMSD25 proposed by Papuga et al in [ 17 ] is used. This test set comprises 57 experimental load cases obtained on different materials by different teams [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. These test items were selected from the original FatLim test set of 282 items (see also [ 16 ]) from the comparison of fatigue strength estimation results of 18 different multiaxial fatigue strength criteria.…”

Section: Validation On Experimental Datamentioning

confidence: 99%

Validating the Methods to Process the Stress Path in Multiaxial High-Cycle Fatigue Criteria

2021

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The paper discusses one of the key features in the multiaxial fatigue strength evaluation—the procedure in which the stress path is analyzed to provide relevant measures of parameters required by multiaxial criteria. The selection of this procedure affects the complete equivalent stress derived for any multiaxial load combinations. Three major concepts—the minimum circumscribed circle, minimum circumscribed ellipse, and moment of inertia methods—are described. Analytical solutions of their evaluation for multiaxial stress state with components described by harmonic functions are provided. The concepts are validated on available experimental data when included into six different multiaxial fatigue strength criteria. The results show that the moment of inertia results in too conservative results. Differences between both methods of circumscribed entities are much smaller. There are indications however that the minimum circumscribed ellipse solution works better for critical plane criteria and for the criteria based on stress tensor transformation into the Ilyushin deviatoric space. On the other hand, the minimum circumscribed ellipse solution tends to shift integral criteria to the conservative side.

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Section: Validation On Experimental Datamentioning

confidence: 99%

Validating the Methods to Process the Stress Path in Multiaxial High-Cycle Fatigue Criteria

2021

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“…The newly introduced MMP criterion significantly improves the prediction quality found for the MMK solution to a point that the MMP criterion could reach the quality of the output comparable with much more complex multiaxial fatigue strength criteria. Papuga et al used the same data set in [ 18 ] to describe the validation results by selected multiaxial fatigue strength criteria at three additional lifetimes (the analyses were run between 100,000 and 750,000 cycles).…”

Section: Introductionmentioning

confidence: 99%

Validation of Multiaxial Fatigue Strength Criteria on Specimens from Structural Steel in the High-Cycle Fatigue Region

et al. 2020

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The paper describes results of fatigue strength estimates by selected multiaxial fatigue strength criteria in the region of high-cycle fatigue, and compares them with own experimental results obtained on hollow specimens made from ČSN 41 1523 structural steel. The specimens were loaded by various combinations of load channels comprising push–pull, torsion, bending and inner and outer pressures. The prediction methods were validated on fatigue strengths at seven different numbers of cycles spanning from 100,000 to 10,000,000 cycles. No substantial deviation of results based on the selected lifetime was observed. The PCRN method and the QCP method provide best results compared with other assessed methods. The results of the MMP criterion that allows users to evaluate the multiaxial fatigue loading quickly are also of interest because the method provides results only slightly worse than the two best performing solutions.

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Two modifications of Jiang criterion for constant amplitude multiaxial loading of AA2124-T851 and SS316L

Fusek

Halama

Ličková

2020

Continuum Mech. Thermodyn.

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Efficient lifetime estimation techniques for general multiaxial loading

Cited by 4 publications

References 9 publications

Validating the Methods to Process the Stress Path in Multiaxial High-Cycle Fatigue Criteria

Validating the Methods to Process the Stress Path in Multiaxial High-Cycle Fatigue Criteria

Validation of Multiaxial Fatigue Strength Criteria on Specimens from Structural Steel in the High-Cycle Fatigue Region

Two modifications of Jiang criterion for constant amplitude multiaxial loading of AA2124-T851 and SS316L

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