Resonance reduction for linked train cars moving on multiple simply supported bridges

0574140 - ÚTAM 2024 RIV GB eng J - Článek v odborném periodiku
Yau, J. D. - Urushadze, Shota
Resonance reduction for linked train cars moving on multiple simply supported bridges.
Journal of Sound and Vibration. Roč. 568, January (2024), č. článku 117963. ISSN 0022-460X. E-ISSN 1095-8568
Grant CEP: GA ČR(CZ) GC21-32122J
Institucionální podpora: RVO:68378297
Klíčová slova: active pitching resonator (APR) * dual resonance * periodic structure * VBI * wave attenuation
Obor OECD: Civil engineering
Impakt faktor: 4.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.jsv.2023.117963

The dynamic interaction of a moving train over a series of railway bridges with equal spans can result in a coupled vibration problem of wave transmission between two periodic structures. Dual resonance occurs when both systems vibrate in phase and the train travels at a resonant speed. The objectives of this paper are to (1) develop an active pitching resonator (APR) to attenuate resonance waves in a train, (2) study the dispersion relation for pitching motion control of periodically linked train cars, (3) investigate the key parameters that affect the dispersion band gaps of wave attenuation in a train, (4) present an active vibration cancellation method to enhance the control performance of the APR, and (5) demonstrate the effectiveness of using the optimal APRs to reduce resonance of a moving train. Through dispersion analysis, the optimum APR can not only shift the target frequency level away from resonance of a moving train, but also create a wide resonance band gap to reduce wave transmission in the train. Finally, the effectiveness of the optimum APR unit in reducing the resonance and attenuating the waves of a train travelling over multiple-span simple beams is demonstrated by dynamic finite element analysis of the train-bridge interaction.
Trvalý link: https://hdl.handle.net/11104/0344484