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Refined measurement and simulation of vibration characteristics of ballastless track and its effect on wheel-rail broadband dynamic interaction
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Chaozhi MA1, Liang GAO2, Pu WANG3, Bolun AN4, Peng ZHOU1, Mahantesh M NADAKATTI5. Refined measurement and simulation of vibration characteristics of ballastless track and its effect on wheel-rail broadband dynamic interaction[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .
@article{title="Refined measurement and simulation of vibration characteristics of ballastless track and its effect on wheel-rail broadband dynamic interaction",
author="Chaozhi MA1, Liang GAO2, Pu WANG3, Bolun AN4, Peng ZHOU1, Mahantesh M NADAKATTI5",
journal="Journal of Zhejiang University Science A",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2400462"
}
%0 Journal Article
%T Refined measurement and simulation of vibration characteristics of ballastless track and its effect on wheel-rail broadband dynamic interaction
%A Chaozhi MA1
%A Liang GAO2
%A Pu WANG3
%A Bolun AN4
%A Peng ZHOU1
%A Mahantesh M NADAKATTI5
%J Journal of Zhejiang University SCIENCE A
%V -1
%N -1
%P
%@ 1673-565X
%D 1998
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2400462
TY - JOUR
T1 - Refined measurement and simulation of vibration characteristics of ballastless track and its effect on wheel-rail broadband dynamic interaction
A1 - Chaozhi MA1
A1 - Liang GAO2
A1 - Pu WANG3
A1 - Bolun AN4
A1 - Peng ZHOU1
A1 - Mahantesh M NADAKATTI5
J0 - Journal of Zhejiang University Science A
VL - -1
IS - -1
SP -
EP -
%@ 1673-565X
Y1 - 1998
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2400462
Abstract: The wheel-rail dynamic load (WRL) and its vibration energy transfer (VET) are foundational for studying ballastless track dynamics in high-speed railways. In this study, the higher order modal parameters of track beds with different isolating layers were identified experimentally and a vehicle-track coupled dynamic model considering track-bed broadband vibrations (TBVs) was established. The WRL and its VET were investigated, and the contribution law as well as the influence mechanism of TBVs on them were determined. The results showed the WRL and track-bed vibration energy exhibited significant resonances, with more prominent high-frequency resonance peaks in the track-bed vibration energy. TBVs had a significant effect on low-frequency WRLs, and markedly influenced the VET across various frequency bands. Intense low-frequency and weak high-frequency intermodulation effects between the wheel-rail and track beds were observed. The effect of track-bed vibrations can be disregarded when focusing on high-frequency WRLs above 200 Hz. Variations in the isolating layer stiffness have more significant effects on the track-bed vibration energy than the WRL. rational stiffness of the isolating layer should be selected to avoid mode-coupling resonance from track beds to the wheel-rail subsystem.
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