Year: 2025
Type: article
Abstract: Environmental vibrations induced by subway systems are typically mitigated through track-based isolation measures, which are effective only in localized areas. Extending such solutions along entire lines involves prohibitive costs. To address this limitation, this study investigates the application of resilient wheels as a vehicle-based solution for mitigating vibrations across the entire line by controlling excitation at the source. A frequency-domain environmental vibration prediction model coupled with a wheel–rail interaction model is established using the 2.5D FEM–BEM approach. The simulation results are validated against field measurements, confirming the model’s accuracy. Based on the validated model, the influence of key parameters of the resilient wheel, including mass, rubber stiffness, and damping—on environmental vibration is systematically analyzed. The results demonstrate that increasing the mass of the resilient wheel lowers the P2 resonance frequency but leads to a disproportionate increase in wheel–rail force. Reducing rubber stiffness shifts the P2 force toward lower frequencies and reduces environmental vibration by up to 8 dB, while increasing rubber damping effectively suppresses the P2 resonance peak, achieving a maximum vibration reduction of 2.7 dB. This study confirms that resilient wheels offer a technically viable and economically efficient strategy for line-wide environmental vibration control.
Source: Frontiers in Physics
Authors: Wei Sun, Linya Liu, Gong Cheng
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,077
Awards: G1554761820, G1949292111
OpenAlex ID: W4417263166