The Analysis on the Vehicle Ride Comfort Based on&nbsp; Vehicle-bridge Coupled Vibration

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (8) : 224-230.

The Analysis on the Vehicle Ride Comfort Based on Vehicle-bridge Coupled Vibration

WANG Gui-chun 1，LI Wu-sheng2

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Abstract

It is of significance to study the problem of vehicle comfort due to vehicle-bridge coupled vibration for reasonably designing the bridge structure, and then decreasing the response of vehicle-bridge coupled vibration and improving the ride quality of driver and conductors. A 3 dimensional model of highway cable-stayed bridge with long span and a vehicle spatial model with 9 degrees of freedom are respectively established according to finite element method and D’Alembert theory. The two subsystems of vehicle and bridge are coupled by compatible conditions of displacement and force to solve the vibration differential equations of vehicle-bridge coupled system. The iterative calculation command stream to solve coupled vibration differential equations of vehicle-bridge system is compiled by APDL language in computer software ANSYS. The method to evaluate the vehicle ride comfort is established according to the criteria in ISO2631-1―1997. The vehicle dynamic responses and ride comfort are analyzed considering different vehicle speed and vehicle gravity when multiple vehicles pass the Fujian Changmen cable-stayed bridge with main span of 500m. The results calculated indicate that the dynamic responses of vehicles increase with the increment of vehicle speed, resulting in the vehicle ride comfort to be worse; the dynamic responses of vehicles decrease with the increment of vehicle gravity, bring about the vehicle ride comfort to be better.

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automobile engineering / ride comfort / vehicle / cable-stayed bridge / finite element method / vehicle-bridge coupled vibration。

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WANG Gui-chun 1，LI Wu-sheng2. The Analysis on the Vehicle Ride Comfort Based on Vehicle-bridge Coupled Vibration[J]. Journal of Vibration and Shock, 2016, 35(8): 224-230

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