Spectral fatigue life estimation for non-proportional multiaxial random loading

Carpinteri, Andrea; Fortese, Giovanni; Ronchei, Camilla; Scorza, Daniela; Vantadori, Sabrina

doi:10.1016/j.tafmec.2015.12.019

Cited by 38 publications

(28 citation statements)

References 30 publications

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“…Finally, the expected fatigue damage per unit time is obtained (Step 5 in Fig.1). Details of each step of the F-D/CP criterion are reported in Refs [3][4][5][6][7].…”

Section: Frequency-domain Critical Plane (F-d/cp) Criterionmentioning

confidence: 99%

“…The spectral method employed in this paper was proposed by the authors to determine fatigue damage in structures under multiaxial stationary random Gaussian loading [3]. In the recent past, the method was validated by employing experimental data available in the literature [3][4][5][6][7]. Numerical simulations are here developed, by considering random biaxial loading characterized by different values of the correlation coefficient, zero order moments ratio and central frequencies ratio.…”

Section: Introductionmentioning

confidence: 99%

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Effect of spectral cross-correlation on multiaxial fatigue damage: simulations using the critical plane approach

Carpinteri¹,

Spagnoli²,

Vantadori³

2017

Frattura Ed Integrità Strutturale

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ABSTRACT. The present paper aims to discuss a frequency-domain multiaxial fatigue criterion based on the critical plane approach, suitable for fatigue life estimations in the presence of proportional and non-proportional random loading. The criterion consists of the following three steps: definition of the critical plane, Power Spectral Density (PSD) evaluation of an equivalent normal stress, and estimation of fatigue damage. Such a frequency-domain criterion has recently been validated by using experimental data available in the literature, related to combined proportional and non-proportional bending and torsion random loading. The comparison with such experimental data has been quite satisfactory. In order to further validate the above criterion, numerical simulations are herein performed by employing a wide group of combined bending and torsion signals. Each of such signals is described by an ergodic, stationary and Gaussian stochastic process, with zero mean value. The spectrum of each signal is assumed to be represented by a PSD function with rectangular shape. Different values of correlation degree, variance and spectral content are examined. KEYWORDS.Critical plane-based criterion; Frequency-domain criterion; Power Spectral Density.Citation: Carpinteri, A., Spagnoli, A., Vantadori, S., Effect of spectral crosscorrelation on multiaxial fatigue damage: simulations using the critical plane approach, Frattura ed Integrità Strutturale, 41 (2017) 40-44.

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“…Finally, the expected fatigue damage per unit time is obtained (Step 5 in Fig.1). Details of each step of the F-D/CP criterion are reported in Refs [3][4][5][6][7].…”

Section: Frequency-domain Critical Plane (F-d/cp) Criterionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of spectral cross-correlation on multiaxial fatigue damage: simulations using the critical plane approach

Carpinteri¹,

Spagnoli²,

Vantadori³

2017

Frattura Ed Integrità Strutturale

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“…In Section , the theoretical framework of the spectral criterion proposed by Carpinteri et al to estimate the fatigue damage is discussed. Section is dedicated to the description of the numerical simulations performed by varying the shape of the spectra and the correlation degree between normal and shear stress tensor components.…”

Section: Introductionmentioning

confidence: 99%

Shape of the power spectral density matrix components: Influence on fatigue damage

Vantadori

Fortese

Carpinteri

2019

Fatigue Fract Eng Mat Struct

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The damage estimation for a structure under random loading is a challenge in fatigue assessment, especially when the loading is multiaxial. The comparison of the effect of different spectra on fatigue damage is essential when the structure can be subjected to different types of loadings. Therefore, in the present paper, the expected fatigue damage produced on metallic structures by combined bending and torsion stationary proportional and nonproportional loading is evaluated varying the shape of spectra of the normal and shear stress tensor components.

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“…This is not a new problem and has been addressed using different approaches by different research groups. Carpinteri et al [5] use a spectral approach that has a focus on random non-proportional multiaxial loading. Their method consists of a critical plane method, the stresses on which are analyzed using a frequency-domain criterion.…”

Section: Introductionmentioning

confidence: 99%

A universal, damage-criterion-independent cycle counting method for multiaxial and variable amplitude fatigue

Janssens

2019

MATEC Web Conf.

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Spectral fatigue life estimation for non-proportional multiaxial random loading

Cited by 38 publications

References 30 publications

Effect of spectral cross-correlation on multiaxial fatigue damage: simulations using the critical plane approach

Effect of spectral cross-correlation on multiaxial fatigue damage: simulations using the critical plane approach

Shape of the power spectral density matrix components: Influence on fatigue damage

A universal, damage-criterion-independent cycle counting method for multiaxial and variable amplitude fatigue

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