A novel method for the general application of measured load spectra to different high-speed train bogie frames based on virtual track irregularity

Ji, Chengxiang; Sun, Shouguang; Li, Qiang; Wang, Wenjing; Ren, Zhenwen; Yang, Guangxue

doi:10.1016/j.measurement.2022.111369

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…If any of the above conditions are not met, the bogie frame will produce rolling motion, and the difference between the vertical loads on both sides is the rolling load. According to the load characteristics and action forms, the bouncing load Fb and rolling load Fr can be separated from the vertical load at each end by Equations ( 1) and (2) [23].…”

Section: Bogie Frame Load Seriesmentioning

confidence: 99%

Establishment and Analysis of Load Spectrum for Bogie Frame of High-Speed Train at 400 km/h Speed Level

Tao,

Liu,

et al. 2024

Machines

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The bogie frame, as one of the most critical load-bearing structures of the Electric Multiple Unit (EMU), is responsible for bearing and transmitting various loads from the car body, wheelsets, and its own installation components. With the increasing operating speed of high-speed EMUs, especially when the design and operational speeds exceed 400 km/h, the applicability of current international standards is uncertain. The load spectrum serves as the foundation for structural reliability design and fatigue evaluation. In this paper, the measured loads of the bogie frame of a CR400AF high-speed train on the Beijing–Shanghai high-speed railway are obtained, and the time-domain characteristic of the measured loads is analyzed under different operating conditions. Then, through the Weibull distribution of three parameters, the Weibull parameters at the 450 km/h speed level are fitted, and the maximum load and cumulative frequency under the speed level are derived. Finally, the load spectrum of the bogie frame at the 450 km/h speed level is established, which provides a more realistic load condition for accurately evaluating the fatigue strength of bogie frames at higher speed levels.

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Section: Bogie Frame Load Seriesmentioning

confidence: 99%

Establishment and Analysis of Load Spectrum for Bogie Frame of High-Speed Train at 400 km/h Speed Level

Tao,

Liu,

et al. 2024

Machines

Self Cite

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Measured dynamic load distribution within the in situ axlebox bearing of high-speed trains under polygonal wheel–rail excitation

Hou,

Wang,

Wei

et al. 2024

Railw. Eng. Sci.

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The dynamic load distribution within in-service axlebox bearings of high-speed trains is crucial for the fatigue reliability assessment and forward design of axlebox bearings. This paper presents an in situ measurement of the dynamic load distribution in the four rows of two axlebox bearings on a bogie wheelset of a high-speed train under polygonal wheel–rail excitation. The measurement employed an improved strain-based method to measure the dynamic radial load distribution of roller bearings. The four rows of two axlebox bearings on a wheelset exhibited different ranges of loaded zones and different means of distributed loads. Besides, the mean value and standard deviation of measured roller–raceway contact loads showed non-monotonic variations with the frequency of wheel–rail excitation. The fatigue life of the four bearing rows under polygonal wheel–rail excitation was quantitatively predicted by compiling the measured roller–raceway contact load spectra of the most loaded position and considering the load spectra as input.

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Vibration-based bearing fault diagnosis of high-speed trains: A literature review

Hu,

Xin,

et al. 2023

High-speed Railway

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A novel method for the general application of measured load spectra to different high-speed train bogie frames based on virtual track irregularity

Cited by 6 publications

References 31 publications

Establishment and Analysis of Load Spectrum for Bogie Frame of High-Speed Train at 400 km/h Speed Level

Establishment and Analysis of Load Spectrum for Bogie Frame of High-Speed Train at 400 km/h Speed Level

Measured dynamic load distribution within the in situ axlebox bearing of high-speed trains under polygonal wheel–rail excitation

Vibration-based bearing fault diagnosis of high-speed trains: A literature review

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