Wind-vehicle-bridge full-dynamic coupling analysis method and system

Abstract

The invention discloses a wind-vehicle-bridge full-dynamic coupling analysis method and system. The method comprises the steps that a vehicle-bridge coupling vibration analysis module containing driver behaviors is constructed; an aerodynamic force result on the vehicle and the bridge at the current moment is calculated by adopting FLUENT and is transmitted to the vehicle-bridge coupling vibration analysis module; performing pneumatic simulation and vibration analysis on the aerodynamic force result through a vehicle-bridge coupling vibration analysis module to obtain a vehicle motion state and a track under the combined action of crosswind and a driver, and feeding back the vehicle motion state and the track to FLUENT; and based on a feedback result, adopting FLUENT to calculate an aerodynamic force result on the vehicle and the bridge at the next moment and transmitting the aerodynamic force result to the vehicle-bridge coupling vibration analysis module, and repeating the steps until the calculation is finished. In this way, bidirectional interactive calculation of vehicle aerodynamic force and vehicle state real-time updating is achieved, then wind-vehicle-axle full-dynamic coupling calculation is achieved, and the calculation result is more reasonable and accurate.

Description

technical field [0001] The invention relates to the field of wind-vehicle-bridge coupling analysis, in particular to a wind-vehicle-bridge full dynamic coupling analysis method and system. Background technique [0002] When a vehicle runs on a bridge in a windy environment, it will affect the aerodynamic characteristics of the bridge, and the vibration of the bridge will also affect the movement form of the vehicle. In the wind environment, in addition to the vertical coupling vibration between the vehicle and the bridge, it will also produce relative lateral and deflection motions with the bridge deck. Under the action of crosswind, the attitude of the vehicle is constantly changing, resulting in the constant change of the aerodynamic force of the vehicle depending on the wind speed and direction. At the same time, the change of vehicle attitude under the action of aerodynamic force requires the driver to make corresponding adjustments, which further affects the aerodynami...

AI Technical Summary

Problems solved by technology

Although this method introduces a driving behavior model, it only conducts an independent analysis. In fact, the driver's control of the vehicle is constantly changing with the state of the vehicle on the bridge. This method does not consider the interaction between the driver's behavior and the crosswind.

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