2021
DOI: 10.1590/1679-78256537
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Abstract: In this paper, effect of uncertainty of fastening system properties on the wheel/rail dynamic force (WRDF) was investigated. For this purpose, two deterministic and epistemic models of vehicle/track interaction were developed, using the finite element method. Validity of the results obtained from the models was shown through comparison between the model results and those obtained from field tests. The effects of uncertainty of fastening system properties on the WRDF in different axle loads, vehicle speeds, rai… Show more

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Cited by 4 publications
(3 citation statements)
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“…Figure 2(a) shows the comparison of the fastener dynamic stiffness results of the P-T model and the laboratory measurement data. In the figure, three different fastener stiffness data, considering the preloads under the working condition, are used to verify the P-T model, 9,10 and their static stiffness are, respectively, 6 kN/mm, 75 kN/mm, and 280 kN/mm. 12 It is difficult to accurately obtain the dynamic damping value of the fastener in a laboratory.…”
Section: Track Model With Frequency-dependent Stiffness and Damping O...mentioning
confidence: 99%
See 1 more Smart Citation
“…Figure 2(a) shows the comparison of the fastener dynamic stiffness results of the P-T model and the laboratory measurement data. In the figure, three different fastener stiffness data, considering the preloads under the working condition, are used to verify the P-T model, 9,10 and their static stiffness are, respectively, 6 kN/mm, 75 kN/mm, and 280 kN/mm. 12 It is difficult to accurately obtain the dynamic damping value of the fastener in a laboratory.…”
Section: Track Model With Frequency-dependent Stiffness and Damping O...mentioning
confidence: 99%
“…In fact, the rail pad inserting in the fastener is made of rubber. Laboratory measurements of the fastener dynamic stiffness has showed that the stiffness and damping of it could be affected by the external excitation frequency, environmental temperature, preload generated by the clips 8 and the uncertainty of fastening system, 9 and in turn influence the vibration and noise radiation of the track, [10][11][12][13][14] and the specific impact of each variable is strongly material-dependant. 15 In order to have a better understanding of the effect of the fastener dynamic properties on vehicle/track dynamic performance, various fastener models were proposed.…”
Section: Introductionmentioning
confidence: 99%
“…Other related studies can be seen in Refs. [13][14][15][16][17][18]. However, when considering the influence of fastening failure in the curved track on train-track dynamics, most of the present studies only considered the fastening failure in ballasted track, and few studies have studied the same problem in slab track.…”
Section: Introductionmentioning
confidence: 99%