On the probability density function of rainflow stress range for stationary Gaussian processes

Zhao, Wei; Baker, Michael J.

doi:10.1016/0142-1123(92)90088-t

Cited by 167 publications

(89 citation statements)

References 10 publications

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“…2.5 Zhao-Baker 모델 Zhao-Baker모델은 레인플로우 응력범위분포가 한개의 와이 블확률분포(Weibull probability density funciton)와 한개의 레 일리확률분포(Rayleigh probability density funciton)의 조합으 로 이루어져 있다고 식 (23)과 같이 가정하는 모델이며,, 이로부 터 유도된 피로손상값은 식 (24)와 같다 (Zhao and Baker, 1992).…”

Section: 서 론unclassified

Comparison of Fatigue Damage Models of Spread Mooring Line for Floating Type Offshore Plant

박¹,

김²,

김³

et al. 2013

Journal of Ocean Engineering and Technology

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Section: 서 론unclassified

Comparison of Fatigue Damage Models of Spread Mooring Line for Floating Type Offshore Plant

박¹,

김²,

김³

et al. 2013

Journal of Ocean Engineering and Technology

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“…The other parameters are express by moments parameters of PSD. (4) Zhao-Baker model, Zhao-Baker [15] consider that the probability density function of stress amplitude is a linear combination of Rayleigh and Weibull distribution, as specified in the formula (9). where, w is a weighting coefficient, which ranges from 0 to 1. α , β is the Weibull parameters.…”

Section: Frequency Methods Of Vibration Fatigue Life Prediction On Pipmentioning

confidence: 99%

Fatigue life prediction and optimization of pipeline under random loads

Du¹

2016

Proceedings of the 2016 International Conference on Mechanics, Materials and Structural Engineering

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Abstract. Estimation of the fatigue life of pipelines under the random load was carried out. The power spectrum density of the stress on the dangerous location was calculated by the finite element method. The frequency method was implemented into the vibration fatigue life prediction. The applicability of the four models of the direct frequency method was analysis, which compare with the indirect frequency method. The results show that power spectrum density of the stress has the characteristic of two peaks. The probability density function of the stress amplitude calculated by different model have great differences. The application of the Dirlik model and ZB model get the reasonable value of the fatigue life. The fatigue life of the pipeline was optimized by changing the value of the fillet.

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“…Similarly, conducting the Fourier transform on equation (13), the nonlinear expression of PSD function of the random wave force can be expressed as…”

Section: à á ! ð10þmentioning

confidence: 99%

“…A correction factor between narrow band spectrum and broadband spectrum was introduced in Wirsching and Light 10 model and Benasciutti and Tovo 11 model to reduce the conservatism due to the narrow band assumption. The approximate rain-flow counting distribution was developed by Dirlik, 12 Zhao and Baker, 13 and Park and Song 7 for broadband spectrum, respectively. Several other models were also proposed to deal with the bimodal broadband spectrum.…”

Section: Introductionmentioning

confidence: 99%

Structural fatigue assessment of a fixed mono-pile platform

Wang

Song

Ding

et al. 2016

Advances in Mechanical Engineering

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Fatigue assessment of fixed offshore platforms is essentially important to ensure their structural safety. Because of the small-scale leg diameter, these structures are often drag dominated, and linearized wave force is often utilized for the fatigue estimation. To evaluate the influence of nonlinear effect on fatigue damage, the nonlinear drag force is directly incorporated into the computation of the wave force spectrum based on autocorrelation function. The features and the contributions of nonlinear wave force are first investigated in the frequency domain. Then, structural fatigue damage associated with the linear and nonlinear wave forces is compared using a time-domain fatigue assessment method. Investigation indicates that the influence of nonlinear drag force is closely related to the characteristic diameter of the structure. The nonlinear drag force can contribute up to 10% of the total wave force and lead to about 10% structural fatigue life reduction when the characteristic diameter is small.

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On the probability density function of rainflow stress range for stationary Gaussian processes

Cited by 167 publications

References 10 publications

Comparison of Fatigue Damage Models of Spread Mooring Line for Floating Type Offshore Plant

Comparison of Fatigue Damage Models of Spread Mooring Line for Floating Type Offshore Plant

Fatigue life prediction and optimization of pipeline under random loads

Structural fatigue assessment of a fixed mono-pile platform

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