Study of Impact of Amount of Shock Absorbers on Parameters of Vibrations of Drum and Frame of Vibrating Roller

Abstract

The article presents the results of mathematical modeling of the oscillations of the roller and the frame of the roller of the vibratory roller with a change in the characteristics of the soil compacted and the number of shock absorbers. The rheological model used makes it possible to analyze the features of the interaction of the vibrating roller drum with the material being compacted in the continuous contact, partial uplift, and double jump modes. The paper presents the results of a computational experiment to study the effect of the number and characteristics of absorbers on the oscillation characteristics of the drum and the drum frame as part of the modernization of the DM-614 vibration roller produced by the Rybinsk Plant of Road Machines with the aim of increasing the efforts of the vibratory pathogen from 215 to 280 kN. The computational experiment was carried out for different numbers of shock absorbers with different values of the coefficient of elastic resistance of the soil. The objectives of the research were to determine the magnitude of oscillations of the vibrating roller and the frame of the drum of the vibrating roller DM-614 in the process of soil compaction. The obtained results make it possible to justify the number and characteristics of the vibration roller shock absorbers to ensure a safe level of vibrations transmitted to the operator’s cabin, considering the use of a vibrating roller in compacting various road construction materials in a wide range of variations in compaction coefficients.