A reliability analysis method for fatigue design

Echard, Benjamin; Gayton, Nicolas; Bignonnet, A.

doi:10.1016/j.ijfatigue.2013.08.004

Cited by 37 publications

(25 citation statements)

References 25 publications

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“…This error can be reduced by multiplying the simulations, so as to take into account a variety of cases, but then again, the cost of simulation might be too high. To workaround the calculation time problem, it is possible to replace the detailed model by a simplified one, usually called meta-model [5].…”

Section: A Poorly Known Structurementioning

confidence: 99%

Fatigue equivalent load approach for fatigue design

Raoult

Delattre

2019

MATEC Web Conf.

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Industrial structures undergo complex loading often unsuitable for the design and validation phases of their development. Engineers seek simplified signals to replace them, yet equivalent in terms of fatigue. A general framework for the construction of fatigue equivalent loads is presented, intended to take into account some uncertainty on the structure to which it will apply. The guiding idea is to describe this uncertainty thanks to parameters of a model of the structure, and then to assure the equivalence of damage or failure behavior over the whole range of expected parameters. The approach is applied in the case of structures undergoing multiple inputs of concentrated force.

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Section: A Poorly Known Structurementioning

confidence: 99%

Fatigue equivalent load approach for fatigue design

Raoult

Delattre

2019

MATEC Web Conf.

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“…The existence of cracks greatly reduces the strength of the structure, resulting in fracture stress far less than the yield stress, even less than the allowable stress [2], is the root cause of fracture failure. In fatigue problems [3], fatigue load, fatigue life, fatigue crack growth rate and other data often have great randomness and dispersion. In view of the uncertainty in fatigue problems, it is necessary to analyze the crack propagation using reliability theory.…”

Section: Introductionmentioning

confidence: 99%

Interval Reliability Analysis of Titanium Alloy Fatigue

Tu¹,

Zhao²

2019

IJEAS

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“…In the case of the variable‐amplitude loading, a fatigue damage is usually calculated from the loading spectrum, and the reliability is then calculated from the statistical distribution of the damage that is influenced by variations of the material's S‐N curve(s), loading factors, and/or loads themself . To calculate reliability from the fatigue damage, Monte‐Carlo simulations and/or FORM methods are frequently applied . Often, the influence of the loading spectrum is considered through the equivalent stress amplitude or range .…”

Section: Introductionmentioning

confidence: 99%

“…To calculate reliability from the fatigue damage, Monte‐Carlo simulations and/or FORM methods are frequently applied . Often, the influence of the loading spectrum is considered through the equivalent stress amplitude or range . Some researcher also follow a stochastic approach to calculate damage as opposed to the application of the material's S‐N curve with scatter, but it was shown by Paolino and Cavatorte that the former approach yields in better reliability predictions only 10% of the cases.…”

Section: Introductionmentioning

confidence: 99%

Theoretical framework for estimating a product's reliability using a variable‐amplitude loading spectrum and a stress‐based approach

Portalés

Sania

Klemenc

2018

Fatigue Fract Eng Mat Struct

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An innovative approach for predicting the reliability of a structure that is subject to a variable‐amplitude dynamic load is presented. In this approach, a Gassner durability curve with its scatter is modelled using a 2‐parametric Weibull's probability density function (PDF). The trend of the Gassner durability curve is modelled with a general hyperbola equation in a log‐log scale. The hyperbola equation is applied to represent the durability curve for the 63.2% probability of fatigue failure that describes the dependency of the Weibull's scale parameter on the loading spectrum's maximum stress. Equations are derived to link the parameters of the hyperbola curve to the material's S‐N curve and the loading spectrum. The Weibull's shape parameter is estimated from the scatter of the material's S‐N curve. The proposed Gassner‐curve model is applied to calculate the fatigue reliability from the PDF of the loading spectrum's maximum stress and the PDF of the durability‐curve's amplitude stress for the selected number of loading‐cycles‐to‐failure.

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A reliability analysis method for fatigue design

Cited by 37 publications

References 25 publications

Fatigue equivalent load approach for fatigue design

Fatigue equivalent load approach for fatigue design

Interval Reliability Analysis of Titanium Alloy Fatigue

Theoretical framework for estimating a product's reliability using a variable‐amplitude loading spectrum and a stress‐based approach

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