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

Author

Listed:
  • Xinshui Yu
  • Tianxiang Yu
  • Kunling Song
  • Bifeng Song

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.

Suggested Citation

  • Xinshui Yu & Tianxiang Yu & Kunling Song & Bifeng Song, 2021. "Reliability analysis of load-sharing parallel systems considering equivalent strength degradation," Journal of Risk and Reliability, , vol. 235(2), pages 193-200, April.
    • Handle: RePEc:sae:risrel:v:235:y:2021:i:2:p:193-200
    DOI: 10.1177/1748006X20968420
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    References listed on IDEAS

    as
    1. Peng Gao & Liyang Xie, 2015. "Fuzzy Dynamic Reliability Models of Parallel Mechanical Systems Considering Strength Degradation Path Dependence and Failure Dependence," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-9, May.
    2. Bin Liu & Min Xie & Way Kuo, 2016. "Reliability modeling and preventive maintenance of load-sharing systemswith degrading components," IISE Transactions, Taylor & Francis Journals, vol. 48(8), pages 699-709, August.
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