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Reliability analysis of load-sharing system with the common-cause failure based on GO-FLOW method

Author

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  • Li, Jingkui
  • Wang, Hanzheng
  • Tang, Yunqi
  • Li, Zhandong
  • Jiang, Xiuhong

Abstract

The load-sharing system (LSS) with the common-cause failure (CCF) is widely used in industrial engineering applications. If a component in this system fails, the total load is shared by the other components, leading to an increased failure rate of the surviving components. The traditional GO-FLOW method is difficult to calculate the reliability of this system accurately. To address this issue, a new reliability analysis approach is proposed in this paper. In this approach, a new GO-FLOW operator is established to simulate the LSS with CCF. Firstly, the state transfer relationship between components in the LSS is identified. Secondly, the α-factor is used to establish the relationship between the independent failure rate λI and the CCF rate λC. Finally, the Markov method is employed to calculate the transient-state and steady-state reliability of the system, and the calculation process for the parallel system and k-out-of-n(F) system are given, respectively. The feasibility of the proposed method is illustrated through a numerical example of a distributed electric propulsion system. This approach extends the applicability of the GO-FLOW method.

Suggested Citation

  • Li, Jingkui & Wang, Hanzheng & Tang, Yunqi & Li, Zhandong & Jiang, Xiuhong, 2025. "Reliability analysis of load-sharing system with the common-cause failure based on GO-FLOW method," Reliability Engineering and System Safety, Elsevier, vol. 254(PA).
    • Handle: RePEc:eee:reensy:v:254:y:2025:i:pa:s0951832024006616
    DOI: 10.1016/j.ress.2024.110590
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