Dynamic interaction analysis of suspended monorail vehicle and bridge subject to crosswinds

• Published in: Mechanical systems and signal processing Vol. 156; p. 107707
• Main Authors: Bao, Yulong, Zhai, Wanming, Cai, Chengbiao, Zhu, Shengyang, Li, Yongle
• Format: Journal Article
• Language: English
• Published: Berlin Elsevier Ltd 01.07.2021; Elsevier BV
• Subjects: Aerodynamics; Crosswinds; Dynamic response; Equations of motion; Interaction models; Mass-spring-damper systems; Model testing; Monorails; Multibody systems; Nonuniformity; Performance evaluation; Riding comfort; Suspended monorail vehicle; Turbulent crosswind; Vehicles; Velocity distribution; Vibration analysis; Wind forces; Wind speed; Wind-vehicle-bridge interaction; Dynamic response; Riding comfort; Turbulent crosswind; Wind-vehicle-bridge interaction; Suspended monorail vehicle
• ISSN: 0888-3270; 1096-1216
• DOI: 10.1016/j.ymssp.2021.107707

•A coupled wind- suspended monorail vehicle-bridge dynamic model is proposed.•A turbulent wind velocity field consisting of various velocities is simulated.•The effects of crosswinds on the ride comfort of vehicles are investigated. This paper develops a fully coupled wind-vehicle-bridge (WVB) interaction model to evaluate the dynamic performance and riding comfort of the suspended monorail vehicle-bridge system subject to turbulent crosswinds. The dynamic interactions between the vehicle and the bridge, the wind and the bridge, and the wind and the vehicle are considered in the model. The suspended monorail vehicle is modeled as a mass-spring-damper system and the motion equations of the multi-body system are derived. Through generating nonuniformity wind velocity fields consisting of various wind average velocities, an accurate approach to simulate the actual aerodynamic wind forces acting on the bridge and on moving vehicles is proposed. Further, a multi-span bridge is chosen as an example to illustrate the dynamic behaviors of the proposed WVB system. Results indicate that the turbulent crosswinds could have a great influence on the dynamic performance of the suspended monorail vehicle-bridge system, and it should be taken into account in the simulation of aerodynamic wind forces to guarantee the accurateness of vehicle vibration analysis. Besides, passengers could experience uncomfortable when vehicles pass through the bridge under strong turbulent crosswinds.