Dynamic Time Series Reliability Analysis for Long-Life Mechanic Parts with Stress-Strength Correlated Interference Model

Suo, Bin

doi:10.23940/ijpe.19.01.p6.5666

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…The theory shows that reliability mainly depends on the degree of interference between stress and strength. The stress-strength interference model proposed by Freudenthal [8] was gradually widely used in fatigue reliability design in the 1960s. Traditionally, stress-strength interference theory is used to deal with the reliability of parts and structures under static stress-strength interference [9].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Reliability Evaluation of High-Speed Train Gearbox Based on Copula Function

Liu

Chen

2022

IEEE Access

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As a key component of the high-speed train transmission system, the reliability of the gearbox directly affects the reliability and driving safety of the high-speed train. Taking the key parts in the gearbox: driving gear, driven gear, gearbox housing and bearing as the research object, the dynamic reliability of the gearbox is evaluated. First, combined with classical stress-strength interference theory, the number of stochastic loads is regarded as a Poisson process, and the strength degradation is described by the Gamma process, the Gamma strength degradation parameter of each part is determined from the part material or the part's P-S-N curve, and the reliability model of each key part of the gearbox is obtained. Second, the gearbox is regarded as a series system, and the Gumbel Copula function is introduced to deal with the nonlinear correlation between different parts and between different failure modes of the same part. The nesting relationship of the Copula function is determined, the parameter values of the Gumbel Copula function are determined based on the kernel density estimation and maximum likelihood estimation method, so as to establish the dynamic reliability model of the gearbox system and realize the evaluation of the dynamic reliability of the gearbox. The evaluation results show that the method for evaluating the reliability of high-speed train gearboxes is in line with engineering practice. The evaluation method has practical significance for the reliability check, optimization design and dynamic tracking of the gearbox reliability during the service period of the high-speed train gearbox.

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Section: Introductionmentioning

confidence: 99%

Dynamic Reliability Evaluation of High-Speed Train Gearbox Based on Copula Function

Liu

Chen

2022

IEEE Access

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“…e stress-strength interference model was proposed by Freudenthal; it was gradually and widely used in fatigue reliability design in the 1960s [6]. Traditionally, this model is used to deal with the reliability of parts and structures under static stress-strength interference.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Fatigue Analysis of High-Speed Trains Gearbox Using Copula Function

Liu

Chen

et al. 2022

Mathematical Problems in Engineering

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As a key component of the transmission system of high-speed trains, the reliability of gearbox is crucial to the overall reliability and driving safety of high-speed trains. In this work, a comprehensive reliability model for the key parts of the gearbox including the driving and driven gears, bearings, and gearbox housing is developed, which combines the strength degradation parameters obtained by P-S-N curves of the corresponding material, and a stress-strength interference model based on the Poisson distribution of random stress and the Wiener strength degradation process. Further, a nested Copula function reliability model of the gearbox series system is developed using the binary Frank Copula function considering the correlation of failures of different parts and different failure modes. This model realizes the dynamic reliability analysis of the gearbox under different failure modes. The reliability analysis of the key parts of the gearbox and the gearbox series system of high-speed train achieved with this model are in line with the engineering practice. This method enables dynamic tracking and monitoring of gearbox reliability during the service life of high-speed train.

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Dynamic Time Series Reliability Analysis for Long-Life Mechanic Parts with Stress-Strength Correlated Interference Model

Cited by 2 publications

References 22 publications

Dynamic Reliability Evaluation of High-Speed Train Gearbox Based on Copula Function

Dynamic Reliability Evaluation of High-Speed Train Gearbox Based on Copula Function

Dynamic Fatigue Analysis of High-Speed Trains Gearbox Using Copula Function

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