Abstract
To assess the effect of the mass-stiffness distribution of the cab and vibratory roller on the ride quality, the acceleration-frequency characteristics of the isolation systems are researched based on the nonlinear dynamic model of the vehicle. The complex domain is used to solve the vibration equations in the frequency region. The effect of the mass and stiffness parameters of the cab and vehicle is then analyzed via MATLAB software. The research results show that the resonant frequency of the cab's isolations and their acceleration-frequency is insignificantly affected by the mass-stiffness distributions in the case of without the excitation of the vibrator drum. Conversely, under an excitation 28 Hz of the vibrator drum, the mass-stiffness distributions strongly affect on the acceleration-frequency of the cab isolations, especially, when increasing the stiffness coefficient and reducing the cab mass with α= 1.5, the vehicle’s ride quality and structural durability of the vibratory rollers are greatly improved.
Highlights
The cab isolation system of the vibratory rollers was used to reduce the transmission vibration from the vibrator drum and the road surface to the driver [1]
The structure of the traditional rubber mounts equipped on the vibratory roller cab was re-designed and optimized to improve the ride comfort [2]
To further improve the ride comfort and control the cab shaking, the hydro-pneumatic mounts were researched for the vibratory roller cab [11,12,13]
Summary
The cab isolation system of the vibratory rollers was used to reduce the transmission vibration from the vibrator drum and the road surface to the driver [1]. To further improve the ride comfort and control the cab shaking, the hydro-pneumatic mounts were researched for the vibratory roller cab [11,12,13]. All the research results showed that the driver's ride comfort and cab shaking were greatly improved by applying the optimal control for the cab isolations. To reduce the effect of the resonant under the low-frequencies, the specific vibration frequency of the cab isolations should be designed in a range below 2.5 Hz [16] This specific vibration frequency was strongly depended on the cab mass and stiffness of the isolation system. EFFECT OF THE MASS-STIFFNESS DISTRIBUTION OF THE VIBRATORY ROLLER CAB ON THE RIDE QUALITY IN LOW-FREQUENCY REGION. A nonlinear vibratory roller dynamic model is established to analyze the effect of the mass-stiffness distribution on the characteristics of the acceleration-frequency of the cab isolations in the low-frequency region. The mass and stiffness parameters of the vehicle and isolations are simulated to evaluate the results
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