Reliability Analysis for Load-Sharing Parallel Systems with No Failure of Components

Conventional reliability analysis of load-sharing parallel systems is mainly based on the assumption that there is failure of components. When a component fails, the load redistributes among the remaining surviving components. But sometimes there is no failure of components during the usage of a loa...

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Bibliographic Details
Published in:Journal of failure analysis and prevention 2019-10, Vol.19 (5), p.1244-1251
Main Authors: Yu, Xinshui, Yu, Tianxiang, Song, Kunling, Song, Bifeng
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Component reliability
Computer simulation
Corrosion and Coatings
Crack propagation
Damage assessment
Failure analysis
Fatigue failure
Materials Science
Monte Carlo simulation
Poisson density functions
Quality Control
Reliability
Reliability analysis
Safety and Risk
Solid Mechanics
Technical Article > -Peer-Reviewed
Tribology
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Summary:Conventional reliability analysis of load-sharing parallel systems is mainly based on the assumption that there is failure of components. When a component fails, the load redistributes among the remaining surviving components. But sometimes there is no failure of components during the usage of a load-sharing parallel system. When there is no failure of components, working load is dispatched among components, which means the load on each component is almost the same during the whole working process. The degradation process of each component is also almost the same. The reliability analysis of a load-sharing parallel system with no component fails can be simplified to the reliability analysis of a component. In this paper, three cases are studied. First, based on stress-strength interference model, estimation of component reliability with load application times is generated, which considered the nonlinear fatigue damage model. Then, Poisson process is used to describe reliability changed with time. Third, the reliability is studied when the working load is not constant but changed with time or load application times. Some examples are used to illustrate the application of these models, and the Monte Carlo simulation method is used as standard to verify the proposed models.
ISSN:1547-7029
1728-5674
1864-1245
DOI:10.1007/s11668-019-00710-1