Physical foundations of vehicle stability when moving uphill and at longitudinal roll back
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Дата
2023
Назва журналу
Номер ISSN
Назва тому
Видавець
Харківський національний автомобільно-дорожній університет
Анотація
Problem. The determination of the stages of stability for vehicles as technical systems
when moving uphill on an inclined section of the road and their possible longitudinal roll back is
considered. The considered stages ensure the safe operation of vehicles in various conditions and
with various combinations of the values of the parameters that are included in the proposed
equations characterizing the stability of the vehicle. Goal. The purpose of the paper is to improve
the method of researching the physical foundations of the stability of vehicles when moving uphill
on an inclined plane, the formation of mathematical models, which allows to significantly improve
the mathematical support of the methods of calculating the stability of two-axle vehicles (cars,
trucks, tractors, special and specialized vehicles, etc.) Methodology. The approaches adopted in
the work to achieve the set goal are based on the classical laws of the mechanics of free-standing
or moving objects, namely: the principle of possible movements, where calculated dynamic and
mathematical models with their solutions are able to preserve the given conditions and
parameters, and characterize the state of stability of the vehicle in case of its longitudinal roll
back. Results. It was established and confirmed by a numerical examples that the longitudinal
stability of a vehicle moving uphill depends on the longitudinal road slope, the vehicle design, the
elasticity of the road surface, the critical overturning angle of the vehicle and its weight
parameters. Originality. The proposed mathematical model of the longitudinal stability of the
vehicle when moving uphill showed that its solution significantly depends on the values of the
geometric parameters of the uphill and the vehicle, and also depends on the position of the center
of gravity of the vehicle relative to the surface of the road surface. Practical value. The obtained
equations for determining the values of the stability parameters of the vehicle when moving uphill
on an inclined road section make it possible to specify the parameters for ensuring the logistics of
vehicles in the conditions of their operation on uphill.
Опис
Ключові слова
stability, longitudinal stability, moving uphill, critical overturning angle, longitudinally overturning, center of gravity, стійкість, поздовжня стійкість, рух в гору, критичний кут перекидання, поздовжнє перекидання, центр ваги
Бібліографічний опис
Physical foundations of vehicle stability when moving uphill and at longitudinal roll back / Kolisnyk M., Berezyk A., Lykhodii O., Chevchenko А., Chervonoshtan А. // Автомобiльний транспорт : зб. наук. пр. / М-во освiти i науки України, Харків. нац. автомоб.-дор. ун-т ; редкол.: А. В. Гнатов (гол. ред.) та iн. – Харкiв, 2023. – Вип. 52. – С. 5–13.