Mean stress effect correction using constant stress ratio S–N curves

Niesłony, Adam; Böhm, Michał

doi:10.1016/j.ijfatigue.2013.02.019

Cited by 84 publications

(44 citation statements)

References 24 publications

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“…The concept of the S-N curve was put forward by August Wöhler in the 1860s [29], while the notion of ε-N was pioneered by Louis Coffin and Stanford Manson [14], [17] and Paul Paris popularized the rule of da/dn-∆K [26], [30]. HCF was normally carried out to present a safe-life (i.e., stress-based) curve; where plastic deformation does not play a major role [31]. It shows that operating stresses are well below the elastic limit [28].…”

Section: Overview Of Fatigue Life Assessmentmentioning

confidence: 99%

The Effect of Dent Under Fatigue Loading in Pressurized Pipeline: A Review

2015

IJAERD

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Section: Overview Of Fatigue Life Assessmentmentioning

confidence: 99%

The Effect of Dent Under Fatigue Loading in Pressurized Pipeline: A Review

2015

IJAERD

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“…A considerable number of relatively recent works in fatigue journals have dealt with this topic, e.g. Chu [1], Wang et al [2], Kwofie [3], Dowling et al [4], Sekercioglu et al [5] and Niesłony et al [6], if we consider only stressbased methods.…”

Section: Introductionmentioning

confidence: 99%

“…New, superior MSE models are often proposed, and are proved to be valid. However, the test sets used for the validation are small, consisting of less than 10 materials (Kwofie [3], Nieslony et al [6], Sekercioglu et al [5], Wang et al [2]). …”

Section: Introductionmentioning

confidence: 99%

Mean stress effect in stress-life fatigue prediction re-evaluated

et al. 2018

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Abstract. The paper compares various methods for computing the equivalent stress amplitude for stress cycles of non-zero mean value in stress-life fatigue prediction. A set of 11 calculation methods is evaluated. In addition to formulations based on common static or fatigue properties, the Walker formula and the generalized Linear formula are included in the investigation. These two methods use an optimization routine to find the material parameters. The final response of the methods is compared and discussed. The Walker method provides a better solution. The generalized Linear method produces inferior results, i.e. the linear fit of the segment of the Haigh diagram is not an optimal solution.

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“…Susmel [20] introduced a mean stress sensitivity index into the modified Wöhler curve method to account for the mean stress effect perpendicular to the critical planes under multiaxial loadings. Niesłony and Böhm [21] proposed a stress-based approach by employing two -curves under alternating stress and stress ratio = 0. Kujawski [22] made use of analogy with Neuber's rule and proposed a deviatoric version of the SWT model to consider mean stress effect for relatively large compressive mean stress cases.…”

Section: Introductionmentioning

confidence: 99%

A Modified Walker Model Dealing with Mean Stress Effect in Fatigue Life Prediction for Aeroengine Disks

Mao

et al. 2018

Mathematical Problems in Engineering

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Mean stress effect plays an important role in fatigue life prediction, and it is discovered that maximum stress has nonnegligible influence on mean stress effect. Therefore, a modified Walker model is proposed to account for mean stress effect on fatigue life of aeroengine disks, which contains the influence of stress ratio and maximum stress on mean stress effect. Eight sets of fatigue data for standard smooth bars from six kinds of materials commonly used in aeroengine disks as well as two sets of experimental data from simulated specimens of turbine disks were employed to investigate the prediction capability of the proposed model against other candidate mean stress relationships. It is found that Goodman model generates most conservative results, while Morrow model overestimates fatigue life for most cases. SWT model yields similar results to Walker model but with less accuracy. The results of the modified Walker model turn out to be superior to those of any other candidate models for all cases examined, especially for large mean stress ones. Thus, the modified Walker model can be an effective method to predict fatigue lives of aeroengine disks influenced by mean stresses.

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Mean stress effect correction using constant stress ratio S–N curves

Cited by 84 publications

References 24 publications

The Effect of Dent Under Fatigue Loading in Pressurized Pipeline: A Review

The Effect of Dent Under Fatigue Loading in Pressurized Pipeline: A Review

Mean stress effect in stress-life fatigue prediction re-evaluated

A Modified Walker Model Dealing with Mean Stress Effect in Fatigue Life Prediction for Aeroengine Disks

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