Vehicle Ride Comfort Analysis Based on Vehicle‐Bridge Coupled Vibration

Abstract

The study in this paper aims to evaluate the effects of vehicle-bridge coupled vibration on the vehicle ride comfort. The mechanical model of both vehicle and bridge subsystems and the vibration differential equations are established, respectively, based on the principle of dynamic balance and finite element method. The APDL command stream for iterative calculation is compiled on the ANSYS platform. 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 pavement levels while multiple vehicles pass through the cable-stayed bridge. The analysis results indicate that the dynamic responses of vehicles decrease with the improvement of pavement roughness, resulting in the vehicle ride comfort to be better; the dynamic responses of vehicles increase with the increment of vehicle speed or the decrement of vehicle gravity, resulting in the vehicle ride comfort to be worse. The present research results can provide an insight into the rational design of bridge structure so as to reduce the vehicle-bridge coupling vibration responses and improve the ride quality of drivers and passengers.

Effect of Vehicle–Bridge Coupled Vibration on the Performance of Magnesium Phosphate Cement Repair Materials

“…Under open traffic construction conditions, the vibration of old bridge decks caused by vehicles affects the newly placed repair materials of adjacent lanes [8][9][10]. A study by Jiang et al [11] showed that coupled vibration of a vehicle and bridge can lead to propagation of numerous micro-cracks and other defects in the concrete during the setting and the hardening period.…”

Driving Comfort Analysis Method of Highway Bridge Based on Human-Vehicle-Bridge Interaction

“…Some scholars have streamlined the analysis by directly using the vehicle's vibration response. Tis method has a high computational efciency but a large error [3]. Te processing of the vehicle's vibration acceleration results based on geometric relationships allows retroactive calculation of the driver position's vibration acceleration response.…”

“…Te distance X t of the vehicle from the initial moment at any time can be determined by equations ( 1)- (3). Tis represents the constraint displacement along the vehicle's travel direction in each time step of the human-vehiclebridge method, as shown in the following equation:…”

“…To achieve the HVBSI analysis, we applied diferent horizontal constraint displacements (Ux) of magnitude X t � X t M − X 0 R to the four vehicle-bridge coupling nodes in each load step (implemented via the D command based on known velocities). At the end of each load step, the constraints were reapplied to the human-vehicle system nodes as outlined in step (3). We coupled the four-axle nodes with the nodes moved to the bridge surface using vertical displacement (Uz) as per equation (5).…”

Modelling and analysis of passenger rail vehicle for the improvement of critical speed using MR damper based semi-active suspension

“…[4][5][6] However, trains running at high speed are prone to experience excessive vibrations, which may cause various issues related to vehicle stability, safety and passenger comfort. [7][8][9] To overcome these issues, improvement in suspension systems can be a good solution as these play an essential role in deciding the vehicle's stability and critical speed. In general, three types of Suspension systems: passive, active, and semi-active are used to reduce vibrations in rail-road vehicles and enhance the comfort and stability.…”