Reliability analysis of load-sharing parallel systems considering equivalent strength degradation

Xinshui Yu, Tianxiang Yu, Kunling Song, Bifeng Song

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In this paper, a new reliability method for load-sharing parallel systems with dependent components that share the workload equally before and after some components have failed is studied. In the working process of a load-sharing parallel system, after the failure of some components, the surviving components share the original system workload with higher components loads. The states of all the components are dependent. The failure behavior of a component impacts the strength degradation process of the remaining working components. For a load-sharing parallel system, one component works the whole system works, which means the component with the largest initial strength works, the whole system works. Firstly, we use the equivalent strength degradation theory to get the remaining strength of the component with the largest initial strength after some components fail. Then, the stress-strength interference model will be used to calculate the reliability after some components fail. Finally, the proposed method is illustrated by a numerical example and verified by the Monte Carlo simulation method.

Original languageEnglish
Pages (from-to)193-200
Number of pages8
JournalProceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
Volume235
Issue number2
DOIs
StatePublished - Apr 2021

Keywords

  • dependence
  • equivalent strength degradation
  • Load-sharing parallel systems
  • reliability

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