A Novel Multi-state Bogie System Reliability Evaluation Approach by Extended d-MC Model for High Speed Train

IF 2.7 4区 工程技术 Q2 TRANSPORTATION SCIENCE & TECHNOLOGY
Yong Fu, Ruoqu Liu, Jisheng Dai, Wenlong Zhu, Xin Liu, Yong Qin
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引用次数: 0

Abstract

Abstract Bogie is a pivotal system and plays a critical part in the safety and reliability management of high speed rail. However, the available bogie system reliability analysis methods lack the consideration of multi-state characteristics, and the common multi-state reliability analysis methods, being an NP-hard problem, lead to a low efficiency. In order to overcome the mentioned drawbacks, this paper proposes a novel multi-state rail train bogie system reliability analysis approach based on the extended d-MC model. Three different function interactions within the bogie system are considered to build the multi-state bogie system flow network model. Meanwhile, an extended d-MC model is established to remove unnecessary d-MC candidates and duplicates, which greatly enhances the computing efficiency. The bogie system reliability is calculated, and the examples are provided. Numerical experiments are carried out for the different operational conditions of the bogie system and are used to testify the practicability of the method projected in this article, and is is found that the proposed method outperforms a newly developed method in solving the multi-state reliability problems.
基于扩展d-MC模型的高速列车多状态转向架系统可靠性评估新方法
转向架是高速铁路的关键系统,在高速铁路的安全可靠性管理中起着至关重要的作用。然而,现有的转向架系统可靠性分析方法缺乏对多状态特性的考虑,常用的多状态可靠性分析方法属于np难题,导致分析效率较低。为了克服上述缺点,本文提出了一种基于扩展d-MC模型的多状态轨道列车转向架系统可靠性分析方法。考虑转向架系统内部三种不同功能的相互作用,建立了多状态转向架系统流网络模型。同时,建立了一个扩展的d-MC模型,去除了不必要的候选d-MC和重复的d-MC,大大提高了计算效率。对转向架系统的可靠性进行了计算,并给出了算例。针对转向架系统的不同工况进行了数值实验,验证了本文方法的实用性,结果表明,本文方法在解决多状态可靠性问题方面优于一种新开发的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Transportation Safety and Environment
Transportation Safety and Environment TRANSPORTATION SCIENCE & TECHNOLOGY-
CiteScore
3.90
自引率
13.60%
发文量
32
审稿时长
10 weeks
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