DOI: https://doi.org/10.20535/1810-0546.2018.4.141241

Applying of Transfer Effect and Information Entropy to Analyze the Magneto-Rheology Shock Absorber

Ihor V. Nochnichenko, Oleg M. Yahno

Abstract


Background. Known methods of enhancing the magneto-rheological damper operation characteristics are not enough structured to use them to calculate damping characteristics in wide temperature range, physical aspects of the transfer phenomenon are considered in the design task of the high-speed and accurate shock absorbers.

Objective. The aim of the paper is to investigate transfer phenomenon and working processes of the magneto-rheological shock absorber.

Methods. Experiments and calculation, based on experimental data, to describe heat and mass transfer (separately) processes including influence of the electromagnetic strength on them are carried out.

Results. Processing of experimental data and calculation show that changing the electromagnetic power in range 0–26 W provides the flow regulation in range 0.25–0 ml/min. Dependence between the magnetic liquid flow rate and electromagnetic strength was established. The possibility of changing pressure difference between damper chambers by changing electrical current and voltage was proved.

Conclusions. Taking into account the phenomenon of transport and physical effects makes it possible to learn the processes that occur in the magneto-rheological damper and magneto-rheological fluid more deeply. In-depth knowledge of phenomena and processes opens up new possibilities for taking into account operating modes in changing operating conditions. Despite the power consumption, the use of the magnetorheological effect is most suitable in the dampers of a small group (with a maximum resistance force of up to 600 N). The obtained law for a given fluid can be incorporated into the control algorithm for the operating characteristic of a magneto-rheological damper. The represented method provides possibility to take into account the transfer phenomenon and influence of ponderomotive force on damping characteristics of the magneto-rheology shock absorber.

Keywords


Damper characteristics; Viscosity; Temperature; Heat flow; Magnetic liquid; Shock absorber; Characteristics transfer effect; Information transfer

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