Theoretical research and experimental validation of elastic dynamic load spectra on bogie frame of high-speed train

Zhu, Ning; Sun, Shouguang; Li, Qiang; Zou, Hua

doi:10.3901/cjme.2016.0308.027

Cited by 17 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4, and nonlinear tansig is expressed as Eq. (5). The linear transfer function is purelin, i.e., y = x, whose linear coefficient is the coefficient of the network node.…”

Section: Neural Network Fittingmentioning

confidence: 99%

“…However, the transfer relation between load and stress was not discussed in the study because of the different working conditions. Zhu et al [5] conducted a theoretical study on and an experimental validation of elastic dynamic load spectra on the bogie frame of a high-speed train. The computed result proved that the simplified load series is reasonable.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of the Load-Stress Response Characteristics of the Bogie Frame in Intercity Electric Multiple Unit

Zou

Sun

et al. 2018

Chin. J. Mech. Eng.

Self Cite

View full text Add to dashboard Cite

Load spectra research for bogie frame requires establishing the load-stress relationship on working condition, which has been omitted by the researchers. With the load-stress of the bogie frame of an intercity Electric Multiple Unit (Hereinafter referred to as EMU) as the research object, an optimization model of the load-stress transfer relationship is established. The load-stress coefficient for EMU bogie frame was calibrated in the laboratory bench and online test was arranged on Dazhou-Chengdu line. Comparison of nonlinear and linear neural networks proves that the linear transitive relation between the load and stress of the bogie frame in the operating process is highly suitable. An optimization model of the load-stress transfer coefficient is obtained. The data calculated with the modified coefficient are closer to the dynamic stress results in the actual operating process than the data calculated with the calibration coefficient. The coefficient of the modified transitive relation is unaffected by operating area, empty load, heavy load, or other conditions in the operating process of the intercity EMU. The real loads in actual situations are obtained. The model of online load-stress relationship that is highly suitable for line stress calculation is finally established. The research is helpful for further damage calculation and inferring the time history signal of the load in load spectra research.

show abstract

“…4, and nonlinear tansig is expressed as Eq. (5). The linear transfer function is purelin, i.e., y = x, whose linear coefficient is the coefficient of the network node.…”

Section: Neural Network Fittingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Load-Stress Response Characteristics of the Bogie Frame in Intercity Electric Multiple Unit

Zou

Sun

et al. 2018

Chin. J. Mech. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The load spectrum serves as the foundation for structural reliability design and fatigue evaluation. In the field of load spectrum research for the bogie structures of railway vehicles, Zhu et al [9] established the load spectrum for high-speed EMU bogie structures based on actual measurements from the Beijing-Shanghai line (1318 km), calibrated the load spectrum based on the damage consistency criteria and compared it with current international standards. Kassner et al [10] obtained the vertical load spectrum for light rail vehicle bogie structures under specified operating conditions through multibody dynamics simulation and compared the fatigue assessment results with current international standards.…”

Section: Introductionmentioning

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

View full text Add to dashboard Cite

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.

show abstract

“…Beams, with various geometric and material characteristics, are one of the most common load-carrying members that are used in many engineering structures such as shafts of rotating machinery, turbine blades, vehicle chassis, buildings, marine structures, etc. (Chaker and Cherifati, 1999; Chen and Zhu, 2021; Ibrahim et al, 1996; Tüfekci et al, 2020a, 2020b; Tuzzi et al, 2020; Woo, 1986; Yucel et al, 2014; Zhu et al, 2016). Beams usually have predictable mechanical characteristics due to their geometric simplicity, which allows certain assumptions to be made.…”

Section: Introductionmentioning

confidence: 99%

Free vibrations of spatial frame structures: Analytical modelling and solution

Genel

Tüfekçi

2022

Journal of Vibration and Control

View full text Add to dashboard Cite

This study analytically handles the three-dimensional free vibrations of spatial frames using the initial values method, considering the axial and shear deformations alongside rotary inertias, namely, torsional, in-plane bending and out-of-plane bending. To handle the spatial geometry, the direction cosine matrices are used. Validation is performed with three cases in total, one case available in the literature alongside two numerical examples that are solved analytically and compared to the finite element models. Excellent agreements are found between the analytical results and the results in the literature, as well as those obtained from the finite element models.

show abstract

Theoretical research and experimental validation of elastic dynamic load spectra on bogie frame of high-speed train

Cited by 17 publications

References 8 publications

Analysis of the Load-Stress Response Characteristics of the Bogie Frame in Intercity Electric Multiple Unit

Analysis of the Load-Stress Response Characteristics of the Bogie Frame in Intercity Electric Multiple Unit

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

Free vibrations of spatial frame structures: Analytical modelling and solution

Contact Info

Product

Resources

About