A NOVEL FREQUENCY DOMAIN METHOD FOR PREDICTING FATIGUE CRACK GROWTH UNDER WIDE BAND RANDOM LOADING

Adragna, N.

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8 Citazioni (Scopus)

Abstract

This work deals with the evaluation of the fatigue crack growth rate of structural components subjected to uniaxial Gaussian stationary wide band random loading. In detail, a new frequency domain method that allows the user to estimate the expected crack growth rate directly from the PSD data is proposed. Using a stochastic mean function properly, introduced and described by simple closed form relationships implemented by systematic numerical simulations of a high number of wide band random processes, the proposed method permits to avoid the onerous time domain simulations and provides in general crack growth rate predictions in a good accordance with the so-called time domain method. Practical applications, carried out by considering various PSDs reported in the literature, have corroborated the accuracy of the proposed method. © 2006 Elsevier Ltd. All rights reserved.
Lingua originaleEnglish
pagine (da-a)1065-1079
RivistaInternational Journal of Fatigue
Volume29(6)
Stato di pubblicazionePublished - 2006

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Frequency Domain Method
Crack Growth Rate
Fatigue Crack Growth
Fatigue crack propagation
Time Domain
Crack propagation
Random process
Random processes
Closed-form
Numerical Simulation
Prediction
Computer simulation
Evaluation
Estimate
Simulation

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

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title = "A NOVEL FREQUENCY DOMAIN METHOD FOR PREDICTING FATIGUE CRACK GROWTH UNDER WIDE BAND RANDOM LOADING",
abstract = "This work deals with the evaluation of the fatigue crack growth rate of structural components subjected to uniaxial Gaussian stationary wide band random loading. In detail, a new frequency domain method that allows the user to estimate the expected crack growth rate directly from the PSD data is proposed. Using a stochastic mean function properly, introduced and described by simple closed form relationships implemented by systematic numerical simulations of a high number of wide band random processes, the proposed method permits to avoid the onerous time domain simulations and provides in general crack growth rate predictions in a good accordance with the so-called time domain method. Practical applications, carried out by considering various PSDs reported in the literature, have corroborated the accuracy of the proposed method. {\circledC} 2006 Elsevier Ltd. All rights reserved.",
keywords = "fatigue; crack growth; random process; power spectral density; random loading; rainflow method; stochastic analysis",
author = "{Adragna, N.} and Bernardo Zuccarello",
year = "2006",
language = "English",
volume = "29(6)",
pages = "1065--1079",
journal = "International Journal of Fatigue",
issn = "0142-1123",
publisher = "Elsevier Limited",

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T1 - A NOVEL FREQUENCY DOMAIN METHOD FOR PREDICTING FATIGUE CRACK GROWTH UNDER WIDE BAND RANDOM LOADING

AU - Adragna, N.

AU - Zuccarello, Bernardo

PY - 2006

Y1 - 2006

N2 - This work deals with the evaluation of the fatigue crack growth rate of structural components subjected to uniaxial Gaussian stationary wide band random loading. In detail, a new frequency domain method that allows the user to estimate the expected crack growth rate directly from the PSD data is proposed. Using a stochastic mean function properly, introduced and described by simple closed form relationships implemented by systematic numerical simulations of a high number of wide band random processes, the proposed method permits to avoid the onerous time domain simulations and provides in general crack growth rate predictions in a good accordance with the so-called time domain method. Practical applications, carried out by considering various PSDs reported in the literature, have corroborated the accuracy of the proposed method. © 2006 Elsevier Ltd. All rights reserved.

AB - This work deals with the evaluation of the fatigue crack growth rate of structural components subjected to uniaxial Gaussian stationary wide band random loading. In detail, a new frequency domain method that allows the user to estimate the expected crack growth rate directly from the PSD data is proposed. Using a stochastic mean function properly, introduced and described by simple closed form relationships implemented by systematic numerical simulations of a high number of wide band random processes, the proposed method permits to avoid the onerous time domain simulations and provides in general crack growth rate predictions in a good accordance with the so-called time domain method. Practical applications, carried out by considering various PSDs reported in the literature, have corroborated the accuracy of the proposed method. © 2006 Elsevier Ltd. All rights reserved.

KW - fatigue; crack growth; random process; power spectral density; random loading; rainflow method; stochastic analysis

UR - http://hdl.handle.net/10447/13520

M3 - Article

VL - 29(6)

SP - 1065

EP - 1079

JO - International Journal of Fatigue

JF - International Journal of Fatigue

SN - 0142-1123

ER -