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The method for calculating phase angle between exciter force of vibration exciter and roller displacement

Authors :
E. A. Shishkin
Source :
Вестник СибАДИ, Vol 21, Iss 3, Pp 388-394 (2024)
Publication Year :
2024
Publisher :
Siberian State Automobile and Highway University, 2024.

Abstract

Introduction. In the process of soil compaction it is important to have information about the current density of the layer, as it enables to quickly adjust the load on the compacted material. The field methods of compaction quality assessment do not cope with this task, as they make point estimation within the pavement area. Therefore, continuous compaction monitoring systems installed on vibratory road rollers are becoming increasingly common. The systems developed by BOMAG and AMMANN require, among other things, the phase angle between the exciter force and the roller movement to calculate the compaction quality index. The phase angle is determined by the unbalance position sensor, which is very labor-intensive. In addition, continuous compaction monitoring systems include an accelerometer. The purpose of this paper is to develop an indirect method for calculating the phase angle from accelerometer readings.The method of research. In order to achieve the purpose of the work, a roller-soil single-mass model in a typical mode for vibratory rollers (periodic loss of contact) has been studied. As a result of modeling it has been found that the reaction of the compacted material has the main influence on the vertical component of a roller acceleration and practically does not affect the horizontal component. This is confirmed by the experimental data.Results. The phase angle can be determined by mutual correlation of the horizontal and vertical acceleration signals of the roller obtained with the accelerometer.Conclusion. The study proposes a new method of calculating the phase angle between the exciter force and the roller displacement, which eliminates the direct measurement of this angle. The calculation of the angle is based on the readings of a two-axis accelerometer installed on the road roller. The proposed method enables to simplify the system of continuous compaction control and reduce the labor intensity of phase angle measurement.

Details

Language :
Russian
ISSN :
20717296 and 26585626
Volume :
21
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Вестник СибАДИ
Publication Type :
Academic Journal
Accession number :
edsdoj.10c845141ae44937aa51445e3eaf06b4
Document Type :
article
Full Text :
https://doi.org/10.26518/2071-7296-2024-21-3-388-394