Fatigue life assessment methods for railway vehicle bogie frames

Xiu, Ruixian; Spiryagin, Maksym; Wu, Qing; Yang, Shuchen; Liu, Yanwen

doi:10.1016/j.engfailanal.2020.104725

Cited by 51 publications

(16 citation statements)

References 39 publications

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“…Various fatigue assessment methods are also applicable to punching fatigue of bridge decks [23,24]. To accurately reflect the fatigue damage process, the method of calculating the fatigue detail stress history [46] was used to evaluate the fatigue of the bridge deck in this study, as shown in Figure 1.…”

Section: Fatigue Assessment Process Of Bridge Deckmentioning

confidence: 99%

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Fatigue Performance of Steel‐Concrete Composite Continuous Box Girder Bridge Deck

et al. 2021

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The fatigue performance of the bridge deck significantly affects the safety and durability of the overall steel-concrete composite beam bridge. Based on the vehicle flow information of the highway within 10 years, the fatigue performance of a two-way four-lane steel-concrete composite continuous beam bridge deck is studied in this research. The results indicate that the effect of the wheel track position is negligible for two-way four-lane bridge when the wheel track sways laterally, and the fatigue stress of bridge deck concrete is the most unfavorable while the loading position is 7.0 m away from the bridge center line. The fatigue damage decreases by 30%–40% when the centerline of the lane deviates from the most unfavorable stress position by 1 m. The punching fatigue of the concrete is more sensitive to the changes in slab thickness, and the thickness of the deck concrete slab is recommended to be ≥35 cm.

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Section: Fatigue Assessment Process Of Bridge Deckmentioning

confidence: 99%

“…e results obtained through this design method were conservative. e second type of the assessment method is the one that requires calculating the degree of fatigue damage [22][23][24][25][26]. It can be divided into two subcategories.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Performance of Steel‐Concrete Composite Continuous Box Girder Bridge Deck

et al. 2021

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“…The standard-prescribed loads (e.g., JIS 42,074 UIC 615-4 4,5 and EN 1,37,496), measured load spectrums and simulated load spectrums to assess bogie frames' fatigue life, which were reviewed in. 6,7 Standard-prescribed loads use dynamic load coefficients to express dynamic loads, which are not consistent with the real service environment; this may result in fatigue life assessments that deviate from realistic outcomes. Measured load spectrums and simulated load spectrums can reproduce operational scenarios.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life prediction for locomotive bogie frames using virtual prototype technique

Xiu

Spiryagin

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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Current research papers use simulated load spectrums to assess bogie frames’ fatigue life but seldom consider traction and braking loads. Traction and braking loads play important roles in predicting fatigue life in high-speed and heavy haul operational scenarios. Hence, there is a research gap in terms of the consideration of longitudinal load spectrums while assessing bogie frames’ fatigue life. This paper presents research about this topic. A virtual prototype technique available in literature has been extended for this purpose; it uses multibody dynamics and finite element techniques to simulate the behaviour of bogie frames under real operational service loads. As a result, the special simulation methodology has been developed in this work and it includes the unique integration of simulation approaches that includes train dynamics, locomotive dynamics with the consideration of a traction control algorithm and the adopted fatigue life calculation method. This paper gives numerical examples of a rigid-flexible coupled dynamic railway vehicle model subjected to longitudinal forces. Road Environment Percent Occurrence Spectrum (REPOS) load spectrums of the bogie frame were developed from a whole-trip train simulation on a real route. The spectrums are then used to predict locomotive the bogie frame’s fatigue life. The results of the bogie frame fatigue life evaluation performed in this paper show that fatigue lives at the roots of traction rod seats under longitudinal load spectrums are shorter than their fatigue life under vertical load spectrums.

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“…The vehicle's structural fatigue reliability has always been watched closely by the operational service providers and design manufacturers. The commonly used fatigue life assessment method in rail vehicle is as follows [1][2][3] : first, the dynamic stress spectrum is compiled by rain-flow count based on the stress time-domain signal obtained from the actual test; then, with combining the corresponding S-N curve and Palmgren-Miner damage accumulation criterion, the fatigue damage or fatigue life is calculated out directly. However, limited by the actual conditions (cost, difficulty, safety, etc.…”

Section: Introductionmentioning

confidence: 99%

Extrapolation of the dynamic stress spectrum of train bogie frame based on kernel density estimation method

Wang

Zhou

Wang

et al. 2021

Fatigue Fract Eng Mat Struct

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The sufficiency and integrity of dynamic stress spectrum will affect the accuracy of the analysis result. It is necessary to extrapolate them from the short term to the long term while retaining the probability distribution characteristics. The stress spectrum extrapolation and fatigue life assessment of the bogie frame were studied, and a test point was taken as a case study. First, the optimal bandwidth determination in two-dimensional KDE (kernel density estimation) was studied. Second, the gray incidence degree analysis method was proposed to evaluate the proximity-incidence degree and similarityincidence degree of the rain-flow matrices extrapolated before and after.Finally, a fatigue life assessment method, with a multi-sample dynamic stress spectrum extrapolated based on KDE, was proposed. Compared with the linear extrapolation, the relative error of fatigue life assessment result based on KDE extrapolation is −4.17%, which meets the accuracy requirements of engineering. It is more beneficial to ensure the vehicles' safe operation.

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Fatigue life assessment methods for railway vehicle bogie frames

Cited by 51 publications

References 39 publications

Fatigue Performance of Steel‐Concrete Composite Continuous Box Girder Bridge Deck

Fatigue Performance of Steel‐Concrete Composite Continuous Box Girder Bridge Deck

Fatigue life prediction for locomotive bogie frames using virtual prototype technique

Extrapolation of the dynamic stress spectrum of train bogie frame based on kernel density estimation method

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