Reliability analysis of load-sharing systems with spatial dependence and proximity effects

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In the operating process of multi-component systems, components may interact with each other in a way that the load of a failed component is taken up by its nearby components at varying proportions. As a result, the failure rates of the proximate components are accelerated while distant components are not affected. This paper develops a novel spatial model for estimating the reliability of a load-sharing system considering spatial dependence and proximity effects. The spatial model is applicable to systems with heterogeneous or homogeneous components and is suitable for systems with or without distance information. To investigate the importance and significance of the spatial effect, we compare our spatial model with an equal load-sharing through numerical examples. Our results demonstrate that our model is more accurate than standard load sharing models in evaluating system reliability when spatial effects exist.
Original languageEnglish
Article number108284
Number of pages35
JournalReliability Engineering and System Safety
Early online date15 Jan 2022
Publication statusPublished - 31 May 2022


  • reliability analysis
  • load sharing
  • multi-component systems
  • proximity model
  • spatial dependence


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