Study of Dynamic Characteristics of a Screw Scraper Tubular Conveyor-Mixer When Transporting Bulk Materials in Curved Routes
DOI:
https://doi.org/10.32515/2664-262X.2026.14(45).116-124Keywords:
drive rope, screw scraper tubular conveyor-mixer, mathematical model, design parametersAbstract
A mathematical model of longitudinal oscillations of the “drive rope–grain mass” system of a screw scraper tubular conveyor-mixer has been developed, which is based on a quasi-linear description of the elastic properties of the drive element and the transition to Euler variables. The model takes into account the continuous nature of the system mass distribution along the route and allows analytically describing the dynamic state of the conveyor in a steady state of transportation. Based on the constructed model, analytical expressions for the amplitude of resonant oscillations of the working body at a given transportation speed and for the resonant speed at a given amplitude of oscillations were obtained. It was established that with an increase in the nonlinearity parameter at a constant amplitude, the natural frequency of oscillations of the system decreases, and the amplitude when passing through resonance increases with an increase in the speed of movement of the working body and its linear mass, which is physically due to a larger value of the kinetic energy of the system with an increased distance between the scrapers.
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Copyright (c) 2026 Oleg Lyashuk, Yuriy Omelyansky
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