Reliability Analysis of Metro Doors Based on Fault Tree and Monte Carlo Methods
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 10
Abstract
Objective Door system is the most frequently used critical system during vehicle operation, so it is necessary to study its reliability and failure characteristics to ensure the safe operation of urban rail transit. Method Based on the data of door system failure conditions across various Shanghai Rail Transit lines from February 2021 to February 2022, a simulation model based on FTA (fault tree analysis) is established under given state transition rules. Based on this model, the Monte Carlo method is used to simulate the reliability of unknown failure modes: by performing static simulation, the pseudo-random numbers are generated using the linear congruence method to replace real random numbers, and the failure rate of top events and the importance of basic events are calculated; by performing dynamic simulation, the reliability distribution and lifetime sampling values of each component are obtained through multiple distribution fittings; by simulation experiments, the density distribution curves and reliability curves of the system are plotted. Result & Conclusion Numerical results show that，because the failure probability of basic events that obey exponential distribution and Weibull distribution within certain time intervals is very high, thus the system is very likely to fail when it runs into this time interval.
Authors and Affiliations
Sichang DING, Jun YAN
Keywords
Related Articles
- EP ID EP749235
- DOI 10.16037/j.1007-869x.2024.10.032
- Views 46
- Downloads 0
Stress Analysis of Large-diameter Undersea Shield Tunnel Lining Segments during Construction Process
Objective To assess the engineering safety and reliability of undersea large-diameter shield tunnel structures, it is essential to analyze the stress on lining segments. Method Taking the lining segments of Dalian Railwa...
Design and Optimization Experimental Verification of Heat Dissipation System for High-power High-frequency Auxiliary Converters in Metro Trains
[Objective] With the high-degree integration of high-power auxiliary converters in metro trains, the demand for heat dissipation is rising significantly, necessitating the proposal of a new heat dissipation system design...
Aerodynamic Characteristics of City Railway Train at the Sudden Variable Tunnel Cross-Section Positions
［Objective］ In order to ensure train operation safety and passenger comfort, it is necessary to study the chang-ing laws of aerodynamic force and pressure inside the city railway train when passing through the variable...
Characteristics of Passenger Stagnation Behavior Spectrum Based on Monitoring Video Data at Ticket Gate in Urban Rail Transit Stations
[Objective] To scientifically set up the ticket gate, improve its actual passing capacity, and reduce the congestion risk caused by abnormal stagnation of the passengers, it is necessary to study the characteristics of p...
Assessment and Optimization Strategies of Tram Station Environment Based on Park City Scene Creation
Objective In the development context of ecological construction and new urbanization for park cities in the current new-era, the main theme is to explore the planning direction and influencing factors of urban new scene...