Ride comfort Research Papers - Academia.edu (original) (raw)
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In order to evaluate the performance of the air spring of the suspension system in comparison with the hydro-pneumatic suspension system, a mathematical model of air and hydro-pneumatic springs of suspension systems is established based... more
In order to evaluate the performance of the air spring of the suspension system in comparison with the hydro-pneumatic suspension system, a mathematical model of air and hydro-pneumatic springs of suspension systems is established based on their nonlinear characteristics. The performance of the air suspension system is evaluated and compared to the hydro-pneumatic suspension system through two objective functions such as the weighted root mean square (rms) of acceleration responses of the vertical direction of the vehicle body (awb) and dynamic load coefficient (DLC). The obtained results indicate that the awb and DLC values with the air suspension system reduce by 11.87 % and 41.46% in comparison with the hydro-pneumatic suspension system when the vehicle moves on the ISO class B road surface at the vehicle speed of 60 km/h and full load. Finally, the performance of the air suspension system is evaluated and compared to the hydropneumatic suspension system under different operating conditions of vehicle and the evaluation results indicate that the ride performance of the air suspension systems has better than the hydro-pneumatic suspension system.
The purpose of this paper is to analyze the effects of parameters of cab’s isolation system on ride comfort for a single-drum vibratory roller. To analyze and evaluate the its effects on vehicle ride comfort, a half vehicle dynamic model... more
The purpose of this paper is to analyze the effects of parameters of cab’s isolation system on ride comfort for a single-drum vibratory roller. To analyze and evaluate the its effects on vehicle ride comfort, a half vehicle dynamic model of a single-drum vibratory roller is established under the dif erent operating conditions. The parameters of cab’s isolation system such as stif ness and damping coefficients are respectively analyzed based on two objective functions according to the international standard ISO 2631-1. The analysis results indicate that cab ride comfort is greatly influenced by the parameters of the isolation system. The vehicle ride comfort is going to be worse with the increase of the stif ness coefficient of cab’s isolation system. However, the vehicle ride comfort is improved with the increase of the damping coefficient. Finally, the optimal parameters of cab’s isolation system are proposed through the analytical results under dif erent operating conditions.
The purpose of this paper is to analyze the effects of parameters of cab’s isolation system on ride comfort for a single-drum vibratory roller. To analyze and evaluate the its effects on vehicle ride comfort, a half vehicle dynamic model... more
The purpose of this paper is to analyze the effects of parameters of cab’s isolation system on ride comfort for a single-drum vibratory roller. To analyze and evaluate the its effects on vehicle ride comfort, a half vehicle dynamic model of a single-drum vibratory roller is established under the different operating conditions. The parameters of cab’s isolation system such as stiffness and damping coefficients are respectively analyzed based on two objective functions according to the international standard ISO 2631-1. The analysis results indicate that cab ride comfort is greatly influenced by the parameters of the isolation system. The vehicle ride comfort is going to be worse with the increase of the stiffness coefficient of cab’s isolation system. However, the vehicle ride comfort is improved with the increase of the damping coefficient. Finally, the optimal parameters of cab’s isolation system are proposed through the analytical results under different operating conditions.