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

Abstract

The present application discloses a wind-vehicle-bridge full dynamic coupling analysis method and system, the method includes: constructing a vehicle-bridge coupling vibration analysis module including driver behavior; using FLUENT to calculate the aerodynamic force on the vehicle and bridge at the current moment The results are transferred to the vehicle-bridge coupled vibration analysis module; through the vehicle-bridge coupled vibration analysis module, aerodynamic simulation and vibration analysis are performed on the aerodynamic results, and the vehicle motion state and trajectory under the joint action of the crosswind and the driver are obtained and fed back to the In FLUENT; based on the feedback results, use FLUENT to calculate the aerodynamic results on the vehicle and bridge at the next moment and transmit them to the vehicle-bridge coupling vibration analysis module, and so on until the calculation is completed. In this way, the two-way interactive calculation of vehicle aerodynamic force and real-time update of vehicle status is realized, and then the full dynamic coupling calculation of wind-vehicle-bridge is realized, and the calculation results are 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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