Modeling and optimization of two-amplitude eccentric weight with fluent inner mass

The article discusses the vibration exciter of a vibratory roller, including a hollow eccentric weight located inside with a fluent mass. This design makes it possible to reduce the negative effects of shocks and resonance phenomena during reversal and acceleration of the unbalanced shaft. However, in the scientific literature there is no information about the methods for designing such vibration exciters. It is also unclear the movement of the fluent mass inside the eccentric weight during its acceleration and during uniform rotation. In this regard, dynamic modeling was carried out, which made it possible to identify the characteristic features of the movement of the internal mass. Based on this information, a method was proposed for determining the volume of the loose internal mass and its working eccentricity. A parametrized model of unbalance and fluent mass for steady motion was built and multicriteria optimization was carried out using the IOSO NM software package for controlled parameters. The above technique allows designing vibration exciters with specified vibration characteristics for various types of vibratory rollers.