Affiliations: School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi’an, China
Correspondence:
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Corresponding author. Feng Zhang, School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi’an, 710129, China. E-mail: nwpuwindy@nwpu.edu.cn.
Abstract: There will inevitably be failures during the use of hydraulic systems in armored vehicles because of the detrimental environments in which they operate. In order to improve the reliability of such hydraulic systems, a fault tree model of top event ‘hydraulic system failure’ is established and analyzed in this study according to the system arrangement and potential fault mechanisms. To properly consider the uncertain probability of each basic failure event in the system, it is necessary to overcome the limitations of the traditional fault tree model. Accordingly, in this study, the importance of the basic event probability interval in describing the failure probability of the top event (hydraulic system failure) was calculated using Latin hypercube sampling through interval modeling. This method offers significant benefits for the reliability assessment of hydraulic systems and can be used to provide guidance for improving system reliability.
Keywords: Hydraulic system, interval model, fault tree analysis, probability interval, latin hypercube sampling
