Стаття 3 № 3’2020

DOI: 10.33868/0365-8392-2020-3-263-12-15
© Volodymyr Sakhno, Doctor of Technical Sciences (D.Sc.), Professor, Head of Automobiles Department, e-mail: svp_40@ukr.net, ORCID: 0000-0002-5144-7131 (National Transport University);
© Denis Popelysh, Postgraduate Student, Deputy Head of Scientific and Technical Expertise Department, e-mail: popelish@ukr.net, ORCID: 0000-0001-9506-6421,
© Sergyi Tomchuk, Postgraduate Student, Research Assistant of Scientific and Technical Expertise Department, e-mail: stomchuk34@gmail.com, ORCID: 0000-0001-5963-556X
(SE «State Road Transport Research Institute»)


Abstract. The free flow of fluid in a partially filled moving tank vehicle has significant forces and moments, which on the tank shell, which in turn adversely affects the stability of the vehicle. The total values of hydrodynamic forces and moments, together with significant dynamic loads of the road tanker during braking, accelerating and changing the direction of movement, lead to reduce braking properties and deterioration of the stability of the vehicle. The reasons for the partial filling of general-purpose tankers are often due to the fact that they are used for the carriage of goods at different densities, and the restriction of the total mass and loads on the axle of the vehicle may not allow the full volume of the tank to be used.
Currently, no road accident statistics in Ukraine separately account for the number of events involving tank vehicles, but in 2019 alone, at least five resonant accidents have occurred. In two of them killed nine people each. An analysis of truck accident statistics conducted in the United States in 2007 shows a significant number of accidents with tragic consequences, which proves the need to further study the effect of fluid on vehicle stability and control. This paper reviews the studies on the dynamic effects of fluid on partially filled moving tanks that have been around since the 1950s. Studies with different approaches to the calculation of the dynamic influence of flowing fluid on the walls of moving fuel tanks, ship tanks, vehicle tanks, etc. are considered. The conclusions of the research results, which consisted in the integration of mathematical models of fluid motion in a tank with mathematical models of vehicles, are presented in order to determine the effect of fluid flow on the stability of the vehicle.
Keywords: vehicle combinations, tank vehicle, partially filled tank, stability, braking.

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