Fatigue failure analysis of express freight sliding side covered wagon based on the rigid-flexibility model

Abstract

PurposeThe car body stiffness of express freight sliding side covered wagon decreased for the sliding and the resonance vibration based on the flexible car body has affected the dynamics performances. Dynamic loading will cause fatigue cracks and eventually lead to fatigue failure of the car body. This paper aims to investigate the influence of car body flexibility on the evaluation of the failure.Design/methodology/approachIn this paper, the railway vehicles random analysis procedure (RVRAP) is employed to study the fatigue failure of the rigid-flexibility model. Following the analysis process, the rigid-flexibility model is established and four contrastive schemes for simulation analysis are designed. To verify the results, an experimental test using the real car body structure on the vibration test plant is carried out; the RMS of dynamic stress is obtained and compared with the simulation results.FindingsThe results show that the flexibility of the car body has a crucial influence on the fatigue life.Originality/valueThe reliability is verified regarding the use of RVRAP at an appropriate stage on the antifatigue design of the vehicle.

Guest editorial

“…The selected articles of the present special issue were subjected to a rigorous peer review process according to the high scientific standards of the International Journal of Structural Integrity . This special issue is composed by a total of 10 papers proposed by engineers and scientists, covering subjects related to the aforementioned topics, such as fatigue analysis of metallic elements (Santos et al , 2020; Viana et al , 2020), fracture mechanics (Smolnicki et al , 2020), steels structures and connections (Jovasevic et al , 2020), optimization algorithms applied to metallic elements (Li et al , 2020) and among others (Liu et al , 2020; Mech, 2020; Xie et al , 2020a, b; Cao et al , 2020; Kebir et al , 2020).…”

Guest editorial

“…This Special Issue represents the second part of a set of contributions in the field of structural integrity and failure analysis of metallic materials and structures. In the first part of the Special Issue (Montenegro et al , 2021), a range of research topics related to fatigue analysis of metallic elements (Santos et al , 2020; Viana et al , 2020), fracture mechanics (Smolnicki et al , 2020), steels structures and connections (Jovasevic et al , 2020), optimization algorithms applied to metallic elements (Li et al , 2020), among others (Liu et al , 2020; Mech, 2020; Xie et al ., 2020a, b; Cao et al , 2020; Kebir et al , 2020) were covered and published. Several authors have focused on the topic of structural integrity and failure analysis of metallic structural elements.…”

Recent advances in reliability analysis of aeroengine rotor system: a review

“…In recent years, with the rapid development of the computing technique, extensive reliability analysis methods have been developed and applied in various fields, such as aerospace structures (Gao et al, 2020a;Gao and Yuan, 2021;Mohammad, 2020), civil structures (Singh et al, 2019;Abdullah et al, 2019;De Jesus et al, 2010), flexible mechanisms (Li, 2019;Liu et al, 2021;Reza et al, 2019b), etc. During these reliability analysis studies, Plate 1.…”