Identification of abnormal loads between carbody and hanging equipment of high speed train using inverse method

Miao, Bingrong; Zhang, Ying; Wang, Yu; Yuan, Zhao-Feng; Li, Fansong; Chen, Hui

doi:10.1080/10589759.2023.2187055

Cited by 5 publications

(1 citation statement)

References 28 publications

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“…In the above research, the dynamics of a vehicle system provide operational loads and vibrations of vehicle components under nominal conditions. In reality, abnormal vehicle dynamics are common due to the wear and degradation of various vehicle components (Miao, Zhang, Wang, Yuan, Li, & Chen, 2023). It has been found that hunting motions (self-excited oscillation due to instability) significantly affect the vibration and stress of car bodies (Li, Wu, Liu, Wu, & Zeng, 2022) and bogie frames (Qu, Wang, Zhang, Li, & Wei, 2021) and further reduce their fatigue life.…”

Section: Structural and Dynamical Integrity Of Hs Train 113mentioning

confidence: 99%

Theory and practice for assessing structural integrity and dynamical integrity of high-speed trains

Zhang,

Zeng,

Song

et al. 2024

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PurposeThe safety and reliability of high-speed trains rely on the structural integrity of their components and the dynamic performance of the entire vehicle system. This paper aims to define and substantiate the assessment of the structural integrity and dynamical integrity of high-speed trains in both theory and practice. The key principles and approaches will be proposed, and their applications to high-speed trains in China will be presented.Design/methodology/approachFirst, the structural integrity and dynamical integrity of high-speed trains are defined, and their relationship is introduced. Then, the principles for assessing the structural integrity of structural and dynamical components are presented and practical examples of gearboxes and dampers are provided. Finally, the principles and approaches for assessing the dynamical integrity of high-speed trains are presented and a novel operational assessment method is further presented.FindingsVehicle system dynamics is the core of the proposed framework that provides the loads and vibrations on train components and the dynamic performance of the entire vehicle system. For assessing the structural integrity of structural components, an open-loop analysis considering both normal and abnormal vehicle conditions is needed. For assessing the structural integrity of dynamical components, a closed-loop analysis involving the influence of wear and degradation on vehicle system dynamics is needed. The analysis of vehicle system dynamics should follow the principles of complete objects, conditions and indices. Numerical, experimental and operational approaches should be combined to achieve effective assessments.Originality/valueThe practical applications demonstrate that assessing the structural integrity and dynamical integrity of high-speed trains can support better control of critical defects, better lifespan management of train components and better maintenance decision-making for high-speed trains.

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Section: Structural and Dynamical Integrity Of Hs Train 113mentioning

confidence: 99%