JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

Refined measurement and simulation of vibration characteristics of ballastless track and its effect on wheel-rail broadband dynamic interaction

Author(s): Chaozhi MA¹, Liang GAO², Pu WANG³, Bolun AN⁴, Peng ZHOU¹, Mahantesh M NADAKATTI⁵
Affiliation(s): ¹School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China; more
Corresponding email(s): lgao@bjtu.edu.cn, wpwp2012@yeah.net
Key Words: Ballastless track; Higher order modal testing; Wheel-rail dynamic load; Vibration energy transfer; Intermodulation effect; Rational stiffness

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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,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2400462

@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",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/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
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%@ 1673-565X
%D in press
%I Zhejiang University Press & Springer
doi="https://doi.org/10.1631/jzus.A2400462"

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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
SP -
EP -
%@ 1673-565X
Y1 - in press
PB - Zhejiang University Press & Springer
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doi="https://doi.org/10.1631/jzus.A2400462"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

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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