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RESULTS OF EXPERIMENTAL STUDIES OF ACCELERATIONS OF THE DM-617 VIBRATORY ROLLER USING DIGITAL SIGNAL PROCESSING TECHNOLOGY

https://doi.org/10.26518/2071-7296-2020-17-2-182-195

Abstract

Introduction. To improve the vibrating rollers in order to increase sealing capacity, reliability and vibration safety, the interaction of vibrating roller parts between each other and with compacted soil is simulated mathematically. The developed models are validated, i.e. compared with the results of experimental studies. However, the known results of experimental studies were obtained based on a relatively small list of vibrating roller models and soil types, as well as in a steady vibration mode. The paper presents the results of experimental studies, which used a vibratory drum of a roller to study its vertical vibration accelerations both in the steady vibration, as well as transient mode at turning the vibration generator on (speedup) and off (halt). This expands the range of opportunities to validate the existing and newly developed mathematical models.

Materials and methods. Experimental studies of vertical vibration accelerations of a drum were conducted using the DM-617 vibrating roller when compacting natural sand-gravel aggregate. The accelerometer readings show high-frequency harmonics, which makes it significantly more difficult to determine amplitude values of vibration accelerations, therefore a low-frequency filter with a boundary frequency of 200 Hz was used for digital processing.

Results. It was determined that when the DM-617 vibrating roller is compacting soil with maximum driving force within the range of variation of dynamic modulus of soil deformation Evd=14…25 MPа, amplitude values of vertical vibration accelerations of the vibratory drum are from 65... 77 to -61... -69 m/s2 . At the start-up (speedup) of vibration generator, acceleration amplitudes are 1.1 times higher than vertical accelerations of steady operation mode of the vibrating drum and practically do not depend on the dynamic modulus of soil deformation Evd. At turning off (stop) of the vibration generator, amplitude of vertical accelerations do not exceed the vertical accelerations of the steady operation mode of the vibratory drum.

Discussion and conclusion. The vertical acceleration amplitudes of vibratory drums of DM-617 do not depend on the dynamic soil deformation modulus Evd, and this is consistent with the results of experimental studies of the vibratory drum mounted on DM-614. The obtained vertical vibration accelerations of the drum mounted on DM-617 in the steady vibration mode, as well as at switching the vibration generator on (speedup) and off (halt) make it possible to verify the existing and developed mathematical models of interaction of vibrating rollers with compacted soil.

Financial transparency: the authors have no financial interest in the presented materials or methods. There is no conflict of interest.

About the Authors

I. S. Tiuremnov
Federal State Budgetary Educational Institution of Higher Education “Yaroslavl State Technical University”
Russian Federation

Ivan S. Tiuremnov – Cand. of Tech. Sci., Associate Professor, the Head of the Department of Construction and Road Machines

150023, Yaroslavl, Moskovsii Prospect 88



S. N. Ivanov
Federal State Budgetary Educational Institution of Higher Education “Yaroslavl State Technical University”
Russian Federation

Sergey N. Ivanov – student of the department of Construction and Road Machines

150023, Yaroslavl, Moskovsii Prospect 88



A. S. Kraiushkin
Federal State Budgetary Educational Institution of Higher Education “Yaroslavl State Technical University”
Russian Federation

Arseniy S. Kraiushkin – student of the department of Construction and Road Machines

150023, Yaroslavl, Moskovsii Prospect 88



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Review

For citations:


Tiuremnov I.S., Ivanov S.N., Kraiushkin A.S. RESULTS OF EXPERIMENTAL STUDIES OF ACCELERATIONS OF THE DM-617 VIBRATORY ROLLER USING DIGITAL SIGNAL PROCESSING TECHNOLOGY. The Russian Automobile and Highway Industry Journal. 2020;17(2):182-195. (In Russ.) https://doi.org/10.26518/2071-7296-2020-17-2-182-195

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ISSN 2071-7296 (Print)
ISSN 2658-5626 (Online)