Dynamics of an asphalt paver screed with an additional vibration exciter and its influence on the leveling process of asphalt concrete mixture
DOI:
https://doi.org/10.34185/1562-9945-2-163-2026-13Keywords:
asphalt paver, screed, vibration exciter, asphalt concrete mixture, vibration dynamics, pavement leveling, vibration impact, mathematical modelAbstract
The article considers improving the efficiency of the asphalt concrete mixture leveling process during paving by enhancing the design of the asphalt paver screed. The installation of an additional vibration exciter on the screed of a compact asphalt paver is proposed, which intensifies the redistribution of the mixture in the contact zone with the working element and improves the uniformity of pavement layer formation. A mathematical model of the dynamic system “vibration exciter – screed – asphalt concrete mixture” has been developed, taking into account the vertical and angular oscillations of the screed under harmonic excitation. Based on the developed model, the influence of vibration excitation parameters on the inten-sity of the oscillatory process and the leveling performance of the asphalt concrete mixture was investigated. It was established that the rational selection of the vibration exciter rota-tional frequency and the parameters of the eccentric mechanism makes it possible to improve mixture distribution efficiency, reduce surface irregularities, and enhance the conditions for pavement layer formation. The obtained results can be used to improve the design of asphalt paver working elements and to optimize their operating modes.
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