Friction-induced Vibration Reduction and Energy Harvesting of High-speed Train Brake Interface

doi:10.3901/JME.2023.12.318

Abstract

Abstract: Considering that the friction-induced vibration and noise(FIVN) is a common observation in the brake systems of high-speed train, piezoelectric cantilever beam(PZT-beam) is introduced near the brake interface in an attempt to reduce the vibration as well as to harvest the vibration energy. A self-developed braking dynamometer which can simulate the brake performance of high-speed train is employed to conduct the experiment, based on which we have also established a finite element model and a numerical model to study on this research topic, discussing the effect of the PZT-beam on the FIVN and exploring the characteristics of the harvested output power. The results show that the introduction of the proper PZT-beam can effectively reduce the real part of the brake system’s eigenvalue, so that the unstable FIVN intensity can be effectively reduced. The high-frequency vibration energy can be converted into electric energy via the deformation of PZT-beam. The installation of PZT-beam can reduce the frequency component of the brake system and optimize its frequency characteristics, while the main frequency and corresponding mode shape are not significantly changed, indicating that the piezoelectric energy harvesting only suppresses the intensity of the unstable vibration but has no visible effect on the vibration behaviors in terms of frequency and mode. Moreover, the appropriate piezoelectric parameters have no significant effect on the modal coupling characteristics and the unstable vibration intensity of the brake system. The PZT-beam can produce a considerable output voltage due to the strong FIVN of the brake system.

Key words: high-speed train, brake interface, friction-induced vibration and noise, vibration reduction, energy harvesting

CLC Number:

TH117

XIANG Zaiyu, MO Jiliang, ZHU Song, CHEN Wei, DU Liqing. Friction-induced Vibration Reduction and Energy Harvesting of High-speed Train Brake Interface[J]. Journal of Mechanical Engineering, 2023, 59(12): 318-331.

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