Abstract
The maglev bogie is the key subsystem for maglev train security. To ensure life and property security, it is essential to evaluate its risk level before its operation. In this paper, a combinational method of analytic hierarchy process and fuzzy comprehensive evaluation is proposed to assess hazards in a complex maglev bogie system associated with multiple subsystems’ failures. The very comprehensive identification of risk sources has been done by analyzing the structure of maglev bogie. Furthermore, based on the fuzzy theory, linguistic evaluation set is classified according to risk tolerance. The score of each risk factor is obtained by weighted sum of the result of fuzzy comprehensive evaluation. Our results show that the degree of maglev bogie’s risk is within the range of acceptability. The merits of this work facilitate finding the weak links and determining the maintenance of maglev bogie system.
Highlights
Rail safety and reliability are highly related to national development, and the lives and property of people
The very comprehensive identification of risk sources has been done by analyzing the structure of maglev bogie
The score of each risk factor is obtained by weighted sum of the result of fuzzy comprehensive evaluation
Summary
Rail safety and reliability are highly related to national development, and the lives and property of people. We focus on the risk analysis of low-medium speed maglev train bogie. Han et al evaluated experimentally static strength for bogie frame of an urban maglev train including performing fatigue analysis, cumulative damage, and fatigue test based on a developed fatigue load and as a final outcome, aimed at proposing a fatigue strength evaluation method for the bogie frame of urban maglev [1]. Cui et al corroborated the carrying capacity of a maglev train on the horizontal curve through the analysis of a single magnetic bogie to ensure reliability and safety [2]. The research about the risk analysis of low-medium speed maglev train bogie has been rarely done from a holistic point of view
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